removes deprecated @brief and @file docblocks

Handler/APNSHandler.php

 <?php
 /**
- * @file   APNSHandler.php
- * @brief  Handler for Apple-Push-Notifications
- *
  * @author  Richard Weinhold
  * @package  PushNotification
  */

Handler/GCMHandler.php

 <?php
 /**
- * @file   GCMHandler.php
- * @brief  Handler for Google-Cloud-Messaging
- *
  * @author  Richard Weinhold
  * @package  PushNotification
  */

Handler/WNSHandler.php

 <?php
 /**
- * @file   WSHandler.php
- * @brief  Handler for Windows-Push-Notification-Services
- *
  * @author  Richard Weinhold
  * @package  PushNotification
  */

PushHandler.php

 <?php
 /**
- * @file   PushHandler.php
- * @brief   abstract base-class for Push-Notification Handlers
- *
  * @author  Richard Weinhold
  * @package  PushNotification
  */

PushNotification.php

 <?php
 /**
- * @file   PushNotification.php
- * @brief   Push-Notification Wrapper
- *
  * @author  Richard Weinhold
  * @package  PushNotification
  */