Cleanup noops

Author: j-piasecki

packages/react-native-gesture-handler/android/src/main/java/com/swmansion/gesturehandler/react/RNGestureHandlerModule.kt

@@ -108,12 +108,10 @@ class RNGestureHandlerModule(reactContext: ReactApplicationContext?) :
   }
 
   @ReactMethod
-  override fun handleClearJSResponder() {
-  }
+  override fun handleClearJSResponder() = Unit
 
   @ReactMethod
-  override fun flushOperations() {
-  }
+  override fun flushOperations() = Unit
 
   override fun setGestureHandlerState(handlerTag: Int, newState: Int) {
     registry.getHandler(handlerTag)?.let { handler ->