function plt_hide_advanced_database_cleaner_menus() {
//Hide the "Tools → WP DB Cleaner" menu.
remove_submenu_page('tools.php', 'advanced_db_cleaner');
//Hide the "WP DB Cleaner" menu.
remove_menu_page('advanced_db_cleaner');
}
add_action('admin_menu', 'plt_hide_advanced_database_cleaner_menus', 11);