Fixed NotificationManager.php removeNotification function to delete t…

…he notification after it deletes the NotifiableNotification entities instead of have to call deleteNotification after removeNotification.

Manager/NotificationManager.php

@@ -397,8 +397,10 @@ public function removeNotification(array $notifiables, NotificationInterface $no
 
             $event = new NotificationEvent($notification, $notifiable);
             $this->dispatcher->dispatch(MgiletNotificationEvents::REMOVED, $event);
+            $this->flush($flush);
         }
 
+        $this->deleteNotification($notification);
         $this->flush($flush);
     }