chamilo-lms/plugin/tour/uninstall.php

<?php
/* For licensing terms, see /license.txt */
/**
 * Initialization uninstall
 * @author Angel Fernando Quiroz Campos <angel.quiroz@beeznest.com>
 * @package chamilo.plugin.tour
 */
require_once __DIR__ . '/config.php';

Tour::create()->uninstall();