Remove JSC build logic from helloworld (#51895)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/51895

Cleaning up helloworld from all the JSC infrastructure.

Changelog:
[Internal] [Changed] -

Reviewed By: mdvacca

Differential Revision: D76265678

fbshipit-source-id: 81fd363bf484b4c22bd278199646c7b18c59c7ff

packages/helloworld/android/app/build.gradle

@@ -77,19 +77,6 @@ react {
  */
 def enableProguardInReleaseBuilds = false
 
-/**
- * The preferred build flavor of JavaScriptCore (JSC)
- *
- * For example, to use the international variant, you can use:
- * `def jscFlavor = "io.github.react-native-community:jsc-android-intl:2026004.+"`
- *
- * The international variant includes ICU i18n library and necessary data
- * allowing to use e.g. `Date.toLocaleString` and `String.localeCompare` that
- * give correct results when using with locales other than en-US. Note that
- * this variant is about 6MiB larger per architecture than default.
- */
-def jscFlavor = "io.github.react-native-community:jsc-android:2026004.+"
-
 android {
     ndkVersion rootProject.ext.ndkVersion
     buildToolsVersion rootProject.ext.buildToolsVersion
@@ -128,10 +115,5 @@ android {
 dependencies {
     // The version of react-native is set by the React Native Gradle Plugin
     implementation("com.facebook.react:react-android")
-
-    if (hermesEnabled.toBoolean()) {
-        implementation("com.facebook.react:hermes-android")
-    } else {
-        implementation jscFlavor
-    }
+    implementation("com.facebook.react:hermes-android")
 }

packages/helloworld/android/app/src/main/java/com/helloworld/MainApplication.kt

@@ -32,7 +32,7 @@ class MainApplication : Application(), ReactApplication {
         override fun getUseDeveloperSupport(): Boolean = BuildConfig.DEBUG
 
         override val isNewArchEnabled: Boolean = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED
-        override val isHermesEnabled: Boolean = BuildConfig.IS_HERMES_ENABLED
+        override val isHermesEnabled: Boolean = true
       }
 
   override val reactHost: ReactHost