How to Hide the "Click to Load Maps" Admin Menu

function plt_hide_mapoza_click_to_load_for_google_maps_menus() {
	//Hide the "Settings → Click to Load Maps" menu.
	remove_submenu_page('options-general.php', 'mapoza-ctlgm-maps');
}

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

Where do I put this code?