How to Hide the "Web Maps for WP" Admin Menu

function plt_hide_web_maps_for_wp_menus() {
	//Hide the "Web Maps for WP" menu.
	remove_menu_page('agolforwp-options');
}

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

Where do I put this code?