Do not clear notifications on the onPageSelected tab listener, othe…

…rwise notifications map will be cleared before we enter the code (`launchWithNoteId`) that does launch the app from a Push Notifications.

WordPress/src/main/java/org/wordpress/android/ui/main/WPMainActivity.java

@@ -162,8 +162,6 @@ public void onPageSelected(int position) {
                     case WPMainTabAdapter.TAB_NOTIFS:
                         setTabLayoutElevation(mAppBarElevation);
                         new UpdateLastSeenTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-                        // Removes app notifications from the system bar as we're looking at them right now
-                        GCMMessageService.removeAllNotifications(WPMainActivity.this);
                         break;
                 }