<?php
if (!defined('WP_UNINSTALL_PLUGIN')) { exit; }

$keys = ['ammsg_options', 'ck_admin_maintenance_opts'];

foreach ($keys as $key) {
	delete_option($key);
}

if (is_multisite() && function_exists('get_sites')) {
	$sites = get_sites();
	foreach ($sites as $site) {
		switch_to_blog((int) $site->blog_id);
		foreach ($keys as $key) {
			delete_option($key);
		}
		restore_current_blog();
	}
}