removed the unnecessary extends Notification<?> from repeatWhen too.

Author: abersnaze

rxjava-core/src/main/java/rx/Observable.java

@@ -6667,7 +6667,7 @@ public final Observable<T> repeat(final long count, Scheduler scheduler) {
      * @see <a href="http://msdn.microsoft.com/en-us/library/hh229428.aspx">MSDN: Observable.Repeat</a>
      * @since 0.20
      */
-    public final Observable<T> repeatWhen(Func1<? super Observable<? extends Notification<?>>, ? extends Observable<? extends Notification<?>>> notificationHandler, Scheduler scheduler) {
+    public final Observable<T> repeatWhen(Func1<? super Observable<? extends Notification<?>>, ? extends Observable<?>> notificationHandler, Scheduler scheduler) {
         return OnSubscribeRedo.repeat(this, notificationHandler, scheduler);
     }
 
@@ -6692,7 +6692,7 @@ public final Observable<T> repeatWhen(Func1<? super Observable<? extends Notific
      * @see <a href="http://msdn.microsoft.com/en-us/library/hh229428.aspx">MSDN: Observable.Repeat</a>
      * @since 0.20
      */
-    public final Observable<T> repeatWhen(Func1<? super Observable<? extends Notification<?>>, ? extends Observable<? extends Notification<?>>> notificationHandler) {
+    public final Observable<T> repeatWhen(Func1<? super Observable<? extends Notification<?>>, ? extends Observable<?>> notificationHandler) {
         return OnSubscribeRedo.repeat(this, notificationHandler);
     }