Hiding pre-bundled notification when not on dev mode

Summary: Notification "loading from pre-bundled file" won't show up anymore on non-dev mode.

Reviewed By: adamjernst

Differential Revision: D8874556

fbshipit-source-id: 8bfa63691beb65d16617409533f7a38dc00dc310

React/DevSupport/RCTDevLoadingView.m

@@ -131,6 +131,10 @@ RCT_EXPORT_METHOD(hide)
   UIColor *backgroundColor;
   NSString *source;
   if (URL.fileURL) {
+    // If dev mode is not enabled, we don't want to show this kind of notification
+#if !RCT_DEV
+    return;
+#endif
     color = [UIColor grayColor];
     backgroundColor = [UIColor blackColor];
     source = @"pre-bundled file";