remove bogus file

includes/config.php

-<?php
-return [
-    // Trac
-    'trac-url'   => 'https://tleilax:v0i8s1a5@develop.studip.de/trac/login',
-    'trac-query' => 'id=8682',
-
-    // GitLab
-    'gitlab-url'          => 'http://gitlabdev01.virt.uni-oldenburg.de',
-    'gitlab-project'      => 'studip/trunk',
-    'gitlab-access-token' => 'se7cRwBAyySpFnzWmk7a',
-    'gitlab-admin-token'  => true,
-
-    // Conversion settings
-    'create-trac-links' => true,
-];