fix: delete signingConfig for example android app

example/android/app/build.gradle

@@ -2,55 +2,6 @@ apply plugin: "com.android.application"
 apply plugin: "org.jetbrains.kotlin.android"
 apply plugin: "com.facebook.react"
 
-/**
- * This is the configuration block to customize your React Native Android app.
- * By default you don't need to apply any configuration, just uncomment the lines you need.
- */
-react {
-    /* Folders */
-    //   The root of your project, i.e. where "package.json" lives. Default is '..'
-    // root = file("../")
-    //   The folder where the react-native NPM package is. Default is ../node_modules/react-native
-    // reactNativeDir = file("../node_modules/react-native")
-    //   The folder where the react-native Codegen package is. Default is ../node_modules/@react-native/codegen
-    // codegenDir = file("../node_modules/@react-native/codegen")
-    //   The cli.js file which is the React Native CLI entrypoint. Default is ../node_modules/react-native/cli.js
-    // cliFile = file("../node_modules/react-native/cli.js")
-
-    /* Variants */
-    //   The list of variants to that are debuggable. For those we're going to
-    //   skip the bundling of the JS bundle and the assets. By default is just 'debug'.
-    //   If you add flavors like lite, prod, etc. you'll have to list your debuggableVariants.
-    // debuggableVariants = ["liteDebug", "prodDebug"]
-
-    /* Bundling */
-    //   A list containing the node command and its flags. Default is just 'node'.
-    // nodeExecutableAndArgs = ["node"]
-    //
-    //   The command to run when bundling. By default is 'bundle'
-    // bundleCommand = "ram-bundle"
-    //
-    //   The path to the CLI configuration file. Default is empty.
-    // bundleConfig = file(../rn-cli.config.js)
-    //
-    //   The name of the generated asset file containing your JS bundle
-    // bundleAssetName = "MyApplication.android.bundle"
-    //
-    //   The entry file for bundle generation. Default is 'index.android.js' or 'index.js'
-    // entryFile = file("../js/MyApplication.android.js")
-    //
-    //   A list of extra flags to pass to the 'bundle' commands.
-    //   See https://github.com/react-native-community/cli/blob/main/docs/commands.md#bundle
-    // extraPackagerArgs = []
-
-    /* Hermes Commands */
-    //   The hermes compiler command to run. By default it is 'hermesc'
-    // hermesCommand = "$rootDir/my-custom-hermesc/bin/hermesc"
-    //
-    //   The list of flags to pass to the Hermes compiler. By default is "-O", "-output-source-map"
-    // hermesFlags = ["-O", "-output-source-map"]
-}
-
 /**
  * Set this to true to Run Proguard on Release builds to minify the Java bytecode.
  */
@@ -82,22 +33,8 @@ android {
         versionCode 1
         versionName "1.0"
     }
-    signingConfigs {
-        debug {
-            storeFile file('debug.keystore')
-            storePassword 'android'
-            keyAlias 'androiddebugkey'
-            keyPassword 'android'
-        }
-    }
     buildTypes {
-        debug {
-            signingConfig signingConfigs.debug
-        }
         release {
-            // Caution! In production, you need to generate your own keystore file.
-            // see https://reactnative.dev/docs/signed-apk-android.
-            signingConfig signingConfigs.debug
             minifyEnabled enableProguardInReleaseBuilds
             proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
         }