Remove mod/pubsub.php file

mod/pubsub.php

@@ -1,53 +0,0 @@
-<?php
-/**
- * @copyright Copyright (C) 2010-2022, the Friendica project
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- *
- */
-
-use Friendica\App;
-use Friendica\Core\Logger;
-use Friendica\Core\Protocol;
-use Friendica\Core\System;
-use Friendica\Database\DBA;
-use Friendica\DI;
-use Friendica\Model\Contact;
-use Friendica\Protocol\OStatus;
-use Friendica\Util\Strings;
-use Friendica\Util\Network;
-use Friendica\Model\GServer;
-use Friendica\Model\Post;
-
-function hub_return($valid, $body)
-{
-	if ($valid) {
-		echo $body;
-	} else {
-		throw new \Friendica\Network\HTTPException\NotFoundException();
-	}
-	System::exit();
-}
-
-function pubsub_init(App $a)
-{
-
-}
-
-function pubsub_post(App $a)
-{
-
-}