diff --git a/chrome/updater/updater_module.cc b/chrome/updater/updater_module.cc
index ef4286fd767c..f6f29d3cdbd9 100644
--- a/chrome/updater/updater_module.cc
+++ b/chrome/updater/updater_module.cc
@@ -70,21 +70,12 @@ ComponentStateToCobaltExtensionUpdaterNotificationState(
       return kCobaltExtensionUpdaterNotificationStateDownloaded;
     case ComponentState::kUpdating:
       return kCobaltExtensionUpdaterNotificationStateInstalling;
-#if SB_API_VERSION > 13
     case ComponentState::kUpdated:
       return kCobaltExtensionUpdaterNotificationStateUpdated;
     case ComponentState::kUpToDate:
       return kCobaltExtensionUpdaterNotificationStateUpToDate;
     case ComponentState::kUpdateError:
       return kCobaltExtensionUpdaterNotificationStateUpdateFailed;
-#else
-    case ComponentState::kUpdated:
-      return kCobaltExtensionUpdaterNotificationStatekUpdated;
-    case ComponentState::kUpToDate:
-      return kCobaltExtensionUpdaterNotificationStatekUpToDate;
-    case ComponentState::kUpdateError:
-      return kCobaltExtensionUpdaterNotificationStatekUpdateFailed;
-#endif
     default:
       return kCobaltExtensionUpdaterNotificationStateNone;
   }
diff --git a/cobalt/h5vcc/h5vcc_system.cc b/cobalt/h5vcc/h5vcc_system.cc
index 8e194d6b0dd0..ccec869275b6 100644
--- a/cobalt/h5vcc/h5vcc_system.cc
+++ b/cobalt/h5vcc/h5vcc_system.cc
@@ -22,7 +22,6 @@
 #include "cobalt/web/environment_settings_helper.h"
 #include "cobalt_build_id.h"  // NOLINT(build/include_subdir)
 #include "starboard/common/system_property.h"
-#include "starboard/extension/ifa.h"
 #include "starboard/system.h"
 
 using starboard::kSystemPropertyMaxLength;
diff --git a/media/base/starboard_utils.cc b/media/base/starboard_utils.cc
index c175785577ea..f932a063ea8f 100644
--- a/media/base/starboard_utils.cc
+++ b/media/base/starboard_utils.cc
@@ -381,12 +381,6 @@ SbMediaColorMetadata MediaToSbMediaColorMetadata(
   sb_media_color_metadata.matrix =
       static_cast<SbMediaMatrixId>(color_space.matrix);
 
-#if SB_API_VERSION < 14
-  if (color_space.matrix == VideoColorSpace::MatrixID::INVALID) {
-    sb_media_color_metadata.matrix = kSbMediaMatrixIdUnknown;
-  }
-#endif  // SB_API_VERSION < 14
-
   sb_media_color_metadata.range =
       static_cast<SbMediaRangeId>(color_space.range);
   // TODO(b/230915942): Revisit to see if we have to support custom primary id.
diff --git a/starboard/android/shared/BUILD.gn b/starboard/android/shared/BUILD.gn
index 8c219b391aec..7d20bd0ee4da 100644
--- a/starboard/android/shared/BUILD.gn
+++ b/starboard/android/shared/BUILD.gn
@@ -390,7 +390,6 @@ static_library("starboard_platform") {
     "speech_synthesis_internal.cc",
     "speech_synthesis_is_supported.cc",
     "speech_synthesis_speak.cc",
-    "system_get_connection_type.cc",
     "system_get_device_type.cc",
     "system_get_extensions.cc",
     "system_get_locale_id.cc",
diff --git a/starboard/android/shared/system_get_connection_type.cc b/starboard/android/shared/system_get_connection_type.cc
deleted file mode 100644
index 7b3d2bf55d42..000000000000
--- a/starboard/android/shared/system_get_connection_type.cc
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2016 The Cobalt Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "starboard/system.h"
-
-#if SB_API_VERSION < 14
-
-#include "starboard/android/shared/jni_env_ext.h"
-#include "starboard/common/log.h"
-
-using starboard::android::shared::JniEnvExt;
-
-SbSystemConnectionType SbSystemGetConnectionType() {
-  JniEnvExt* env = JniEnvExt::Get();
-  jboolean isWireless =
-      env->CallStarboardBooleanMethodOrAbort("isCurrentNetworkWireless", "()Z");
-
-  if (isWireless) {
-    return kSbSystemConnectionTypeWireless;
-  } else {
-    return kSbSystemConnectionTypeWired;
-  }
-}
-
-#endif  // SB_API_VERSION < 14
diff --git a/starboard/android/shared/system_get_path.cc b/starboard/android/shared/system_get_path.cc
index 22d64edb4411..139318d0c7f2 100644
--- a/starboard/android/shared/system_get_path.cc
+++ b/starboard/android/shared/system_get_path.cc
@@ -135,13 +135,6 @@ bool SbSystemGetPath(SbSystemPathId path_id, char* out_path, int path_size) {
       break;
     }
 
-#if SB_API_VERSION < 14
-    case kSbSystemPathTestOutputDirectory: {
-      return SbSystemGetPath(kSbSystemPathDebugOutputDirectory, out_path,
-                             path_size);
-    }
-#endif
-
     // We return the library directory as the "executable" since:
     // a) Unlike the .so itself, it has a valid timestamp of the app install.
     // b) Its parent directory is still a directory within our app package.
diff --git a/starboard/elf_loader/exported_symbols.cc b/starboard/elf_loader/exported_symbols.cc
index 943fc21f05e7..ace2a28f6044 100644
--- a/starboard/elf_loader/exported_symbols.cc
+++ b/starboard/elf_loader/exported_symbols.cc
@@ -347,9 +347,6 @@ ExportedSymbols::ExportedSymbols() {
 #endif  // SB_API_VERSION < 16
   REGISTER_SYMBOL(SbSystemBreakIntoDebugger);
   REGISTER_SYMBOL(SbSystemClearLastError);
-#if SB_API_VERSION < 14
-  REGISTER_SYMBOL(SbSystemGetConnectionType);
-#endif
 #if SB_API_VERSION < 15
   REGISTER_SYMBOL(SbSystemGetDeviceType);
 #endif
diff --git a/starboard/extension/updater_notification.h b/starboard/extension/updater_notification.h
index 8d9521fafca9..737052ca6717 100644
--- a/starboard/extension/updater_notification.h
+++ b/starboard/extension/updater_notification.h
@@ -31,15 +31,10 @@ typedef enum CobaltExtensionUpdaterNotificationState {
   kCobaltExtensionUpdaterNotificationStateDownloading = 3,
   kCobaltExtensionUpdaterNotificationStateDownloaded = 4,
   kCobaltExtensionUpdaterNotificationStateInstalling = 5,
-#if SB_API_VERSION > 13
   kCobaltExtensionUpdaterNotificationStateUpdated = 6,
   kCobaltExtensionUpdaterNotificationStateUpToDate = 7,
   kCobaltExtensionUpdaterNotificationStateUpdateFailed = 8,
-#else
-  kCobaltExtensionUpdaterNotificationStatekUpdated = 6,
-  kCobaltExtensionUpdaterNotificationStatekUpToDate = 7,
-  kCobaltExtensionUpdaterNotificationStatekUpdateFailed = 8,
-#endif
+
 } CobaltExtensionUpdaterNotificationState;
 
 typedef struct CobaltExtensionUpdaterNotificationApi {
diff --git a/starboard/linux/shared/BUILD.gn b/starboard/linux/shared/BUILD.gn
index 8537d457fb3e..8565c31a23a4 100644
--- a/starboard/linux/shared/BUILD.gn
+++ b/starboard/linux/shared/BUILD.gn
@@ -87,7 +87,6 @@ static_library("starboard_platform_sources") {
     "//starboard/linux/shared/routes.h",
     "//starboard/linux/shared/soft_mic_platform_service.cc",
     "//starboard/linux/shared/soft_mic_platform_service.h",
-    "//starboard/linux/shared/system_get_connection_type.cc",
     "//starboard/linux/shared/system_get_device_type.cc",
     "//starboard/linux/shared/system_get_extensions.cc",
     "//starboard/linux/shared/system_get_path.cc",
diff --git a/starboard/linux/shared/system_get_connection_type.cc b/starboard/linux/shared/system_get_connection_type.cc
deleted file mode 100644
index 8042f3d60d0c..000000000000
--- a/starboard/linux/shared/system_get_connection_type.cc
+++ /dev/null
@@ -1,48 +0,0 @@
-// Copyright 2016 The Cobalt Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "starboard/system.h"
-
-#if SB_API_VERSION < 14
-
-#include "starboard/linux/shared/routes.h"
-
-using starboard::shared::Routes;
-
-SbSystemConnectionType SbSystemGetConnectionType() {
-  Routes routes;
-
-  if (!routes.RequestDump()) {
-    return kSbSystemConnectionTypeUnknown;
-  }
-
-  // Find the top priority route and return if the corresponding route uses a
-  // wireless interface.
-  int priority = INT_MAX;
-  bool is_wireless = false;
-  while (auto route = routes.GetNextRoute()) {
-    if (Routes::IsDefaultRoute(*route)) {
-      if (route->priority < priority) {
-        priority = route->priority;
-        is_wireless = Routes::IsWirelessInterface(*route);
-      }
-    }
-  }
-  if (priority != INT_MAX)
-    return is_wireless ? kSbSystemConnectionTypeWireless
-                       : kSbSystemConnectionTypeWired;
-  return kSbSystemConnectionTypeUnknown;
-}
-
-#endif  // SB_API_VERSION < 14
diff --git a/starboard/linux/shared/system_get_extensions.cc b/starboard/linux/shared/system_get_extensions.cc
index ede9b7bc987f..454bf3abe3f8 100644
--- a/starboard/linux/shared/system_get_extensions.cc
+++ b/starboard/linux/shared/system_get_extensions.cc
@@ -87,11 +87,6 @@ const void* SbSystemGetExtension(const char* name) {
   if (strcmp(name, kStarboardExtensionTimeZoneName) == 0) {
     return starboard::shared::GetTimeZoneApi();
   }
-#if SB_API_VERSION < 14
-  if (strcmp(name, kStarboardExtensionIfaName) == 0) {
-    return starboard::shared::GetIfaApi();
-  }
-#endif  // SB_API_VERSION < 14
 #if SB_IS(EVERGREEN_COMPATIBLE)
   if (strcmp(name, kStarboardExtensionLoaderAppMetricsName) == 0) {
     return starboard::shared::starboard::GetLoaderAppMetricsApi();
diff --git a/starboard/linux/shared/system_get_path.cc b/starboard/linux/shared/system_get_path.cc
index 7231e872d124..4d0e125e28f5 100644
--- a/starboard/linux/shared/system_get_path.cc
+++ b/starboard/linux/shared/system_get_path.cc
@@ -243,12 +243,6 @@ bool SbSystemGetPath(SbSystemPathId path_id, char* out_path, int path_size) {
       mkdir(path.data(), 0700);
       break;
 
-#if SB_API_VERSION < 14
-    case kSbSystemPathTestOutputDirectory:
-      return SbSystemGetPath(kSbSystemPathDebugOutputDirectory, out_path,
-                             path_size);
-#endif  // #if SB_API_VERSION < 14
-
     case kSbSystemPathExecutableFile:
       return GetExecutablePath(out_path, path_size);
 
diff --git a/starboard/nplb/BUILD.gn b/starboard/nplb/BUILD.gn
index 7847c001d33c..74ae937d1f5d 100644
--- a/starboard/nplb/BUILD.gn
+++ b/starboard/nplb/BUILD.gn
@@ -238,7 +238,6 @@ target(gtest_target_type, "nplb") {
     "string_format_wide_test.cc",
     "string_scan_test.cc",
     "system_clear_last_error_test.cc",
-    "system_get_connection_type_test.cc",
     "system_get_error_string_test.cc",
     "system_get_extension_test.cc",
     "system_get_last_error_test.cc",
diff --git a/starboard/nplb/nplb_evergreen_compat_tests/sabi_test.cc b/starboard/nplb/nplb_evergreen_compat_tests/sabi_test.cc
index aa277e36b9f9..47d1991d0b0c 100644
--- a/starboard/nplb/nplb_evergreen_compat_tests/sabi_test.cc
+++ b/starboard/nplb/nplb_evergreen_compat_tests/sabi_test.cc
@@ -28,66 +28,6 @@ namespace nplb_evergreen_compat_tests {
 
 namespace {
 
-#if SB_API_VERSION == 13
-const char* kSabiJsonIdArmHardfp =
-    "{\"alignment_char\":1,\"alignment_double\":8,\"alignment_float\":4,"
-    "\"alignment_int\":4,\"alignment_llong\":8,\"alignment_long\":4,"
-    "\"alignment_pointer\":4,\"alignment_short\":2,\"calling_convention\":"
-    "\"eabi\",\"endianness\":\"little\",\"floating_point_abi\":\"hard\","
-    "\"floating_point_fpu\":\"vfpv3\",\"sb_api_version\":13,\"signedness_of_"
-    "char\":\"signed\",\"signedness_of_enum\":\"signed\",\"size_of_char\":1,"
-    "\"size_of_double\":8,\"size_of_enum\":4,\"size_of_float\":4,\"size_of_"
-    "int\":4,\"size_of_llong\":8,\"size_of_long\":4,\"size_of_pointer\":4,"
-    "\"size_of_short\":2,\"target_arch\":\"arm\",\"target_arch_sub\":\"v7a\","
-    "\"word_size\":32}";
-
-const char* kSabiJsonIdArmSoftfp =
-    "{\"alignment_char\":1,\"alignment_double\":8,\"alignment_float\":4,"
-    "\"alignment_int\":4,\"alignment_llong\":8,\"alignment_long\":4,"
-    "\"alignment_pointer\":4,\"alignment_short\":2,\"calling_convention\":"
-    "\"eabi\",\"endianness\":\"little\",\"floating_point_abi\":\"softfp\","
-    "\"floating_point_fpu\":\"vfpv3\",\"sb_api_version\":13,\"signedness_of_"
-    "char\":\"signed\",\"signedness_of_enum\":\"signed\",\"size_of_char\":1,"
-    "\"size_of_double\":8,\"size_of_enum\":4,\"size_of_float\":4,\"size_of_"
-    "int\":4,\"size_of_llong\":8,\"size_of_long\":4,\"size_of_pointer\":4,"
-    "\"size_of_short\":2,\"target_arch\":\"arm\",\"target_arch_sub\":\"v7a\","
-    "\"word_size\":32}";
-
-const char* kSabiJsonIdArm64 =
-    "{\"alignment_char\":1,\"alignment_double\":8,\"alignment_float\":4,"
-    "\"alignment_int\":4,\"alignment_llong\":8,\"alignment_long\":8,"
-    "\"alignment_pointer\":8,\"alignment_short\":2,\"calling_convention\":"
-    "\"aarch64\",\"endianness\":\"little\",\"floating_point_abi\":\"\","
-    "\"floating_point_fpu\":\"\",\"sb_api_version\":13,\"signedness_of_char\":"
-    "\"signed\",\"signedness_of_enum\":\"signed\",\"size_of_char\":1,\"size_of_"
-    "double\":8,\"size_of_enum\":4,\"size_of_float\":4,\"size_of_int\":4,"
-    "\"size_of_llong\":8,\"size_of_long\":8,\"size_of_pointer\":8,\"size_of_"
-    "short\":2,\"target_arch\":\"arm64\",\"target_arch_sub\":\"v8a\",\"word_"
-    "size\":64}";
-
-const char* kSabiJsonIdX86 =
-    "{\"alignment_char\":1,\"alignment_double\":8,\"alignment_float\":4,"
-    "\"alignment_int\":4,\"alignment_llong\":8,\"alignment_long\":4,"
-    "\"alignment_pointer\":4,\"alignment_short\":2,\"calling_convention\":"
-    "\"sysv\",\"endianness\":\"little\",\"floating_point_abi\":\"\",\"floating_"
-    "point_fpu\":\"\",\"sb_api_version\":13,\"signedness_of_char\":\"signed\","
-    "\"signedness_of_enum\":\"signed\",\"size_of_char\":1,\"size_of_double\":8,"
-    "\"size_of_enum\":4,\"size_of_float\":4,\"size_of_int\":4,\"size_of_"
-    "llong\":8,\"size_of_long\":4,\"size_of_pointer\":4,\"size_of_short\":2,"
-    "\"target_arch\":\"x86\",\"target_arch_sub\":\"\",\"word_size\":32}";
-
-const char* kSabiJsonIdX64Sysv =
-    "{\"alignment_char\":1,\"alignment_double\":8,\"alignment_float\":4,"
-    "\"alignment_int\":4,\"alignment_llong\":8,\"alignment_long\":8,"
-    "\"alignment_pointer\":8,\"alignment_short\":2,\"calling_convention\":"
-    "\"sysv\",\"endianness\":\"little\",\"floating_point_abi\":\"\",\"floating_"
-    "point_fpu\":\"\",\"sb_api_version\":13,\"signedness_of_char\":\"signed\","
-    "\"signedness_of_enum\":\"signed\",\"size_of_char\":1,\"size_of_double\":8,"
-    "\"size_of_enum\":4,\"size_of_float\":4,\"size_of_int\":4,\"size_of_"
-    "llong\":8,\"size_of_long\":8,\"size_of_pointer\":8,\"size_of_short\":2,"
-    "\"target_arch\":\"x64\",\"target_arch_sub\":\"\",\"word_size\":64}";
-#endif  // SB_API_VERSION == 13
-
 #if SB_API_VERSION == 14
 const char* kSabiJsonIdArmHardfp =
     "{\"alignment_char\":1,\"alignment_double\":8,\"alignment_float\":4,"
diff --git a/starboard/nplb/system_get_connection_type_test.cc b/starboard/nplb/system_get_connection_type_test.cc
deleted file mode 100644
index 3677b10081ba..000000000000
--- a/starboard/nplb/system_get_connection_type_test.cc
+++ /dev/null
@@ -1,48 +0,0 @@
-// Copyright 2021 The Cobalt Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// Here we are not trying to do anything fancy, just to really sanity check that
-// this is hooked up to something.
-
-#include "starboard/common/log.h"
-#include "starboard/common/string.h"
-#include "starboard/system.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-#if SB_API_VERSION < 14
-
-namespace starboard {
-namespace nplb {
-namespace {
-
-TEST(SbSystemGetConnectionTypeTest, SunnyDay) {
-  SbSystemConnectionType type = SbSystemGetConnectionType();
-}
-
-TEST(SbSystemGetConnectionTypeTest, ConnectionIsKnown) {
-  SbSystemConnectionType type = SbSystemGetConnectionType();
-  EXPECT_NE(type, kSbSystemConnectionTypeUnknown);
-}
-
-TEST(SbSystemGetConnectionTypeTest, ConnectionIsWiredOrWireless) {
-  SbSystemConnectionType type = SbSystemGetConnectionType();
-  EXPECT_TRUE(type == kSbSystemConnectionTypeWired ||
-              type == kSbSystemConnectionTypeWireless);
-}
-
-}  // namespace
-}  // namespace nplb
-}  // namespace starboard
-
-#endif  // SB_API_VERSION < 14
diff --git a/starboard/nplb/system_get_path_test.cc b/starboard/nplb/system_get_path_test.cc
index 2a7dd97f74ea..2f13412d46a2 100644
--- a/starboard/nplb/system_get_path_test.cc
+++ b/starboard/nplb/system_get_path_test.cc
@@ -106,9 +106,6 @@ TEST(SbSystemGetPathTest, FailsGracefullyBogusId) {
 TEST(SbSystemGetPathTest, DoesNotBlowUpForDefinedIds) {
   BasicTest(kSbSystemPathDebugOutputDirectory, false, false, __LINE__);
   BasicTest(kSbSystemPathTempDirectory, false, false, __LINE__);
-#if SB_API_VERSION < 14
-  BasicTest(kSbSystemPathTestOutputDirectory, false, false, __LINE__);
-#endif  // #if SB_API_VERSION < 14
   BasicTest(kSbSystemPathCacheDirectory, false, false, __LINE__);
   BasicTest(kSbSystemPathFontDirectory, false, false, __LINE__);
   BasicTest(kSbSystemPathFontConfigurationDirectory, false, false, __LINE__);
@@ -117,9 +114,6 @@ TEST(SbSystemGetPathTest, DoesNotBlowUpForDefinedIds) {
 TEST(SbSystemGetPathTest, DoesNotTouchOutputBufferOnFailureForDefinedIds) {
   UnmodifiedOnFailureTest(kSbSystemPathDebugOutputDirectory, __LINE__);
   UnmodifiedOnFailureTest(kSbSystemPathTempDirectory, __LINE__);
-#if SB_API_VERSION < 14
-  UnmodifiedOnFailureTest(kSbSystemPathTestOutputDirectory, __LINE__);
-#endif  // #if SB_API_VERSION < 14
   UnmodifiedOnFailureTest(kSbSystemPathCacheDirectory, __LINE__);
   UnmodifiedOnFailureTest(kSbSystemPathFontDirectory, __LINE__);
   UnmodifiedOnFailureTest(kSbSystemPathFontConfigurationDirectory, __LINE__);
diff --git a/starboard/raspi/shared/BUILD.gn b/starboard/raspi/shared/BUILD.gn
index 3988122640b7..8b871982d677 100644
--- a/starboard/raspi/shared/BUILD.gn
+++ b/starboard/raspi/shared/BUILD.gn
@@ -32,7 +32,6 @@ static_library("starboard_platform_sources") {
     "//starboard/linux/shared/netlink.h",
     "//starboard/linux/shared/routes.cc",
     "//starboard/linux/shared/routes.h",
-    "//starboard/linux/shared/system_get_connection_type.cc",
     "//starboard/linux/shared/system_get_path.cc",
     "//starboard/linux/shared/system_has_capability.cc",
     "//starboard/linux/shared/time_zone.cc",
diff --git a/starboard/shared/stub/system_get_connection_type.cc b/starboard/shared/stub/system_get_connection_type.cc
deleted file mode 100644
index 49de2c4323ad..000000000000
--- a/starboard/shared/stub/system_get_connection_type.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2016 The Cobalt Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "starboard/system.h"
-
-#if SB_API_VERSION < 14
-
-SbSystemConnectionType SbSystemGetConnectionType() {
-  return kSbSystemConnectionTypeUnknown;
-}
-
-#endif  // SB_API_VERSION < 14
diff --git a/starboard/shared/uwp/media_is_video_supported.cc b/starboard/shared/uwp/media_is_video_supported.cc
index e19e13997db4..3654764ad6e6 100644
--- a/starboard/shared/uwp/media_is_video_supported.cc
+++ b/starboard/shared/uwp/media_is_video_supported.cc
@@ -213,15 +213,6 @@ class XboxVideoCapabilities {
       return is_supported;
     }
 
-#if SB_API_VERSION < 14
-    // AV1 decoder only supports YUVI420 compact texture format. The new format
-    // is only supported after
-    // 14.
-    if (codec == kSbMediaVideoCodecAv1) {
-      return false;
-    }
-#endif  // SB_API_VERSION >= 14
-
     is_supported &= ApplicationUwp::Get()->IsHdrSupported();
     is_supported &= bit_depth == 10;
     is_supported &= primary_id == kSbMediaPrimaryIdBt2020;
diff --git a/starboard/stub/BUILD.gn b/starboard/stub/BUILD.gn
index ff82a57b08a7..1fa22fb8dacd 100644
--- a/starboard/stub/BUILD.gn
+++ b/starboard/stub/BUILD.gn
@@ -205,7 +205,6 @@ static_library("stub_sources") {
     "//starboard/shared/stub/system_break_into_debugger.cc",
     "//starboard/shared/stub/system_clear_last_error.cc",
     "//starboard/shared/stub/system_egl.cc",
-    "//starboard/shared/stub/system_get_connection_type.cc",
     "//starboard/shared/stub/system_get_device_type.cc",
     "//starboard/shared/stub/system_get_error_string.cc",
     "//starboard/shared/stub/system_get_last_error.cc",
diff --git a/starboard/system.h b/starboard/system.h
index b87b5a30b19e..e28bd66abec3 100644
--- a/starboard/system.h
+++ b/starboard/system.h
@@ -58,11 +58,6 @@ typedef enum SbSystemPathId {
   // Path to a directory where temporary files can be written.
   kSbSystemPathTempDirectory,
 
-#if SB_API_VERSION < 14
-  // Path to a directory where test results can be written.
-  kSbSystemPathTestOutputDirectory,
-#endif  // #if SB_API_VERSION < 14
-
   // Full path to the executable file.
   kSbSystemPathExecutableFile,
 
@@ -176,20 +171,6 @@ typedef enum SbSystemDeviceType {
 } SbSystemDeviceType;
 #endif  // SB_API_VERSION < 15
 
-#if SB_API_VERSION < 14
-// Enumeration of network connection types.
-typedef enum SbSystemConnectionType {
-  // The system is on a wired connection.
-  kSbSystemConnectionTypeWired,
-
-  // The system is on a wireless connection.
-  kSbSystemConnectionTypeWireless,
-
-  // The system connection type is unknown.
-  kSbSystemConnectionTypeUnknown,
-} SbSystemConnectionType;
-#endif  // SB_API_VERSION < 14
-
 // Runtime capabilities are boolean properties of a platform that can't be
 // determined at compile-time. They may vary from device to device, but they
 // will not change over the course of a single execution. They often specify
@@ -312,11 +293,6 @@ SB_EXPORT int64_t SbSystemGetUsedGPUMemory();
 SB_EXPORT SbSystemDeviceType SbSystemGetDeviceType();
 #endif
 
-#if SB_API_VERSION < 14
-// Returns the device's current network connection type.
-SB_EXPORT SbSystemConnectionType SbSystemGetConnectionType();
-#endif  // SB_API_VERSION < 14
-
 // Returns if the device is disconnected from network. "Disconnected" is chosen
 // over connected because disconnection can be determined with more certainty
 // than connection usually.