Remove redundant Android runtime scheduler mobile config flags

Summary:
changelog: [internal]

Remove features flags for enabling RuntimeScheduler and RuntimeScheduler+TM to simplify setup.

Reviewed By: mdvacca

Differential Revision: D37912783

fbshipit-source-id: 1a24720dec3cf06067bf523d72f0919731a91b72

ReactAndroid/src/main/java/com/facebook/react/bridge/CatalystInstanceImpl.java

@@ -108,8 +108,7 @@ public class CatalystInstanceImpl implements CatalystInstance {
   // C++ parts
   private final HybridData mHybridData;
 
-  private static native HybridData initHybrid(
-      boolean enableRuntimeScheduler, boolean enableRuntimeSchedulerInTurboModule);
+  private static native HybridData initHybrid();
 
   public native CallInvokerHolderImpl getJSCallInvokerHolder();
 
@@ -124,15 +123,7 @@ public class CatalystInstanceImpl implements CatalystInstance {
     FLog.d(ReactConstants.TAG, "Initializing React Xplat Bridge.");
     Systrace.beginSection(TRACE_TAG_REACT_JAVA_BRIDGE, "createCatalystInstanceImpl");
 
-    if (ReactFeatureFlags.enableRuntimeSchedulerInTurboModule
-        && !ReactFeatureFlags.enableRuntimeScheduler) {
-      Assertions.assertUnreachable();
-    }
-
-    mHybridData =
-        initHybrid(
-            ReactFeatureFlags.enableRuntimeScheduler,
-            ReactFeatureFlags.enableRuntimeSchedulerInTurboModule);
+    mHybridData = initHybrid();
 
     mReactQueueConfiguration =
         ReactQueueConfigurationImpl.create(

ReactAndroid/src/main/java/com/facebook/react/config/ReactFeatureFlags.java

@@ -70,10 +70,6 @@ public class ReactFeatureFlags {
   /** This feature flag enables logs for Fabric */
   public static boolean enableFabricLogs = false;
 
-  public static boolean enableRuntimeScheduler = false;
-
-  public static boolean enableRuntimeSchedulerInTurboModule = false;
-
   /** Feature flag to configure eager attachment of the root view/initialisation of the JS code */
   public static boolean enableEagerRootViewAttachment = false;