How to Hide ReCrawler Admin Menus

function plt_hide_recrawler_menus() {
	//Hide the "ReCrawler" menu.
	remove_menu_page('recrawler');
	//Hide the "ReCrawler → ReCrawler" menu.
	remove_submenu_page('recrawler', 'recrawler');
	//Hide the "ReCrawler → Log" menu.
	remove_submenu_page('recrawler', 'recrawler-log');
}

add_action('admin_menu', 'plt_hide_recrawler_menus', 11);

Where do I put this code?