Delete empty didRegisterUserNotificationSettings (facebook#41013)

Summary:
Pull Request resolved: facebook#41013

[iOS][Breaking] Deleted the no-op didRegisterUserNotificationSettings: callback in RCTPushNotificationManager

Reviewed By: philIip

Differential Revision: D50283620

fbshipit-source-id: 1582367c51c26e5b739cd9284d3b15bfa13274da

Author: ingridwang

packages/react-native/Libraries/PushNotificationIOS/RCTPushNotificationManager.h

@@ -16,9 +16,6 @@ typedef void (^RCTRemoteNotificationCallback)(UIBackgroundFetchResult result);
 #endif // [macOS]
 
 #if !TARGET_OS_UIKITFORMAC
-#if !TARGET_OS_OSX // [macOS]
-+ (void)didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings;
-#endif // [macOS]
 + (void)didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken;
 + (void)didReceiveRemoteNotification:(NSDictionary *)notification;
 #if !TARGET_OS_OSX // [macOS]

packages/react-native/Libraries/PushNotificationIOS/RCTPushNotificationManager.mm

@@ -235,12 +235,6 @@ - (void)stopObserving
   ];
 }
 
-#if !TARGET_OS_OSX // [macOS]
-+ (void)didRegisterUserNotificationSettings:(__unused UIUserNotificationSettings *)notificationSettings
-{
-}
-#endif // [macOS]
-
 + (void)didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
 {
   NSMutableString *hexString = [NSMutableString string];

packages/rn-tester/RNTester/AppDelegate.mm

@@ -338,15 +338,6 @@ - (void)registerPaperComponents:(NSArray<NSString *> *)components
 
 #if !TARGET_OS_TV && !TARGET_OS_UIKITFORMAC
 
-#if !TARGET_OS_OSX // [macOS]
-// Required to register for notifications
-- (void)application:(__unused UIApplication *)application
-    didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings
-{
-  [RCTPushNotificationManager didRegisterUserNotificationSettings:notificationSettings];
-}
-#endif // [macOS]
-
 // Required for the remoteNotificationsRegistered event.
 - (void)application:(__unused RCTUIApplication *)application
     didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken