Remove unused InvalidArgumentException class

diff --git a/wcfsetup/install/files/lib/system/exception/InvalidArgumentException.class.php b/wcfsetup/install/files/lib/system/exception/InvalidArgumentException.class.php
deleted file mode 100644 (file)
index 25acd0a..0000000
--- a/wcfsetup/install/files/lib/system/exception/InvalidArgumentException.class.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-namespace wcf\system\exception;
-
-/**
- * This is a custom implementation of the default \InvalidArgumentException.
- * It is used for backwards compatibility reasons. Do not rely on it
- * inheriting \wcf\system\exception\SystemException.
- * 
- * @author     Tim Duesterhus
- * @copyright  2001-2016 WoltLab GmbH
- * @license    GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
- * @package    WoltLabSuite\Core\System\Exception
- * @since      3.0
- */
-class InvalidArgumentException extends SystemException { }