Remove unused handler on PushNotificationIOS.removeEventListener (#43037)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/43037

Changelog:
[iOS][Breaking] Removing unused `handler` param on  PushNotificationIOS.removeEventListener

Reviewed By: philIip

Differential Revision: D53781102

fbshipit-source-id: a3372d0ccb4addf9983c143fb1a3e206f6aae103

packages/react-native/Libraries/PushNotificationIOS/PushNotificationIOS.js

@@ -308,10 +308,7 @@ class PushNotificationIOS {
    *
    * See https://reactnative.dev/docs/pushnotificationios#removeeventlistener
    */
-  static removeEventListener(
-    type: PushNotificationEventName,
-    handler: Function,
-  ): void {
+  static removeEventListener(type: PushNotificationEventName): void {
     invariant(
       type === 'notification' ||
         type === 'register' ||

packages/react-native/Libraries/__tests__/__snapshots__/public-api-test.js.snap

@@ -6372,10 +6372,7 @@ declare class PushNotificationIOS {
     type: PushNotificationEventName,
     handler: Function
   ): void;
-  static removeEventListener(
-    type: PushNotificationEventName,
-    handler: Function
-  ): void;
+  static removeEventListener(type: PushNotificationEventName): void;
   static requestPermissions(permissions?: {
     alert?: boolean,
     badge?: boolean,