Remove internal methods from the public interface

lib/public/backgroundjob/ijob.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
+ * Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
  * This file is licensed under the Affero General Public License version 3 or
  * later.
  * See the COPYING-README file.
@@ -15,12 +15,6 @@ interface IJob {
 	 */
 	public function execute($jobList, $logger = null);
 
-	public function setId($id);
-
-	public function setLastRun($lastRun);
-
-	public function setArgument($argument);
-
 	public function getId();
 
 	public function getLastRun();