CI: Replace MicroPython hack.

The hack to disable C++ exceptions and avoid a bloated explody build has been
moved to the USER_C_MODULES cmake files so that it's included implicitly.

.github/workflows/micropython.yml

@@ -127,12 +127,11 @@ jobs:
       run: |
         git apply "${{env.FIRMWARE_DIR}}/startup_overclock.patch"
 
-    - name: "HACK: CMakeLists.txt Disable C++ Exceptions Patch"
+    - name: "HACK: MicroPython out of tree board pins.csv fix"
       shell: bash
       working-directory: micropython
       run: |
         git apply "${{env.FIRMWARE_DIR}}/932f76c6ba64c5a3e68de3324556d9979f09303b.patch"
-        git apply "${{env.FIRMWARE_DIR}}/micropython_nano_specs.patch"
 
     # Install apt packages
     - name: Install CCache & Compiler

firmware/PIMORONI_BADGER2040/micropython.cmake

@@ -55,3 +55,14 @@ include(motor/micropython)
 
 # version.py and pimoroni.py
 include(modules_py/modules_py)
+
+# TODO: Use `include(micropython-disable-exceptions)`
+# Do not include stack unwinding & exception handling for C++ user modules
+target_compile_definitions(usermod INTERFACE PICO_CXX_ENABLE_EXCEPTIONS=0)
+target_compile_options(usermod INTERFACE $<$<COMPILE_LANGUAGE:CXX>:
+    -fno-exceptions
+    -fno-unwind-tables
+    -fno-rtti
+    -fno-use-cxa-atexit
+>)
+target_link_options(usermod INTERFACE -specs=nano.specs)

firmware/PIMORONI_BADGER2040W/micropython.cmake

@@ -56,3 +56,14 @@ include(motor/micropython)
 
 # version.py, pimoroni.py and boot.py
 include(modules_py/modules_py)
+
+# TODO: Use `include(micropython-disable-exceptions)`
+# Do not include stack unwinding & exception handling for C++ user modules
+target_compile_definitions(usermod INTERFACE PICO_CXX_ENABLE_EXCEPTIONS=0)
+target_compile_options(usermod INTERFACE $<$<COMPILE_LANGUAGE:CXX>:
+    -fno-exceptions
+    -fno-unwind-tables
+    -fno-rtti
+    -fno-use-cxa-atexit
+>)
+target_link_options(usermod INTERFACE -specs=nano.specs)