Remove deprecated patch

lib/classes/patch/3804.php

@@ -1,61 +0,0 @@
-<?php
-
-/*
- * This file is part of Phraseanet
- *
- * (c) 2005-2013 Alchemy
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-use Alchemy\Phrasea\Application;
-
-class patch_3804 implements patchInterface
-{
-    /**
-     *
-     * @var string
-     */
-    private $release = '3.8.0.a3';
-
-    /**
-     *
-     * @var Array
-     */
-    private $concern = array(base::APPLICATION_BOX);
-
-    /**
-     *
-     * @return string
-     */
-    public function get_release()
-    {
-        return $this->release;
-    }
-
-    public function require_all_upgrades()
-    {
-        return false;
-    }
-
-    /**
-     *
-     * @return Array
-     */
-    public function concern()
-    {
-        return $this->concern;
-    }
-
-    /**
-     * @param base        $appbox
-     * @param Application $app
-     */
-    public function apply(base $appbox, Application $app)
-    {
-        $app['phraseanet.configuration']->setDefault('main', 'task-manager');
-
-        return true;
-    }
-}