uninstall.php

<?php

/*
* Copyright (C) 2017-present, Facebook, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.

* 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 General Public License for more details.
*/


// if uninstall.php is not called by WordPress, die
if (!defined('WP_UNINSTALL_PLUGIN')) {
    die;
}

delete_option('fbmcc_pageID');
delete_option('fbmcc_locale');
delete_option('fbmcc_generatedCode');
delete_option('fbmcc_enabled');
delete_option('fbmcc_install_ts');
delete_option('fbmcc_last_alert_check_ts');
delete_option('fbmcc_cached_alert_check_response');
?>