Remove incomplete languages from code base [skip ci]

resources/lang/ru_RU/pagination.php

@@ -1,19 +0,0 @@
-<?php
-declare(strict_types=1);
-
-/**
- * pagination.php
- * Copyright (C) 2016 thegrumpydictator@gmail.com
- *
- * This software may be modified and distributed under the terms of the
- * Creative Commons Attribution-ShareAlike 4.0 International License.
- *
- * See the LICENSE file for details.
- */
-
-return [
-
-    'previous' => '&laquo; Предыдущие',
-    'next'     => 'Следующие &raquo;',
-
-];