How to Hide Tripzzy Admin Menus

function plt_hide_tripzzy_menus() {
	//Hide "Trips".
	remove_menu_page('edit.php?post_type=tripzzy');
	//Hide "Trips → All Trips".
	remove_submenu_page('edit.php?post_type=tripzzy', 'edit.php?post_type=tripzzy');
	//Hide "Trips → Add New Trip".
	remove_submenu_page('edit.php?post_type=tripzzy', 'post-new.php?post_type=tripzzy');
	//Hide "Trips → Price Categories".
	remove_submenu_page('edit.php?post_type=tripzzy', 'edit-tags.php?taxonomy=tripzzy_price_category&post_type=tripzzy');
	//Hide "Trips → Trip Destinations".
	remove_submenu_page('edit.php?post_type=tripzzy', 'edit-tags.php?taxonomy=tripzzy_trip_destination&post_type=tripzzy');
	//Hide "Trips → Trip Types".
	remove_submenu_page('edit.php?post_type=tripzzy', 'edit-tags.php?taxonomy=tripzzy_trip_type&post_type=tripzzy');
	//Hide "Trips → Trip Activities".
	remove_submenu_page('edit.php?post_type=tripzzy', 'edit-tags.php?taxonomy=tripzzy_trip_activities&post_type=tripzzy');
	//Hide "Trips → Keywords".
	remove_submenu_page('edit.php?post_type=tripzzy', 'edit-tags.php?taxonomy=tripzzy_keywords&post_type=tripzzy');
	//Hide "Trips → Trip Includes".
	remove_submenu_page('edit.php?post_type=tripzzy', 'edit-tags.php?taxonomy=tripzzy_trip_includes&post_type=tripzzy');
	//Hide "Trips → Trip Excludes".
	remove_submenu_page('edit.php?post_type=tripzzy', 'edit-tags.php?taxonomy=tripzzy_trip_excludes&post_type=tripzzy');

	//Hide "Tripzzy".
	remove_menu_page('edit.php?post_type=tripzzy_booking');
	//Hide "Tripzzy → Home".
	remove_submenu_page('edit.php?post_type=tripzzy_booking', 'tripzzy-homepage');
	//Hide "Tripzzy → Bookings".
	remove_submenu_page('edit.php?post_type=tripzzy_booking', 'edit.php?post_type=tripzzy_booking');
	//Hide "Tripzzy → Customers".
	remove_submenu_page('edit.php?post_type=tripzzy_booking', 'edit.php?post_type=tripzzy_customer');
	//Hide "Tripzzy → Enquiries".
	remove_submenu_page('edit.php?post_type=tripzzy_booking', 'edit.php?post_type=tripzzy_enquiry');
	//Hide "Tripzzy → Coupons".
	remove_submenu_page('edit.php?post_type=tripzzy_booking', 'edit.php?post_type=tripzzy_coupon');
	//Hide "Tripzzy → Forms".
	remove_submenu_page('edit.php?post_type=tripzzy_booking', 'edit.php?post_type=tripzzy_form');
	//Hide "Tripzzy → Filters +".
	remove_submenu_page('edit.php?post_type=tripzzy_booking', 'tripzzy-custom-categories');
	//Hide "Tripzzy → Themes".
	remove_submenu_page('edit.php?post_type=tripzzy_booking', 'tripzzy-themes');
	//Hide "Tripzzy → Settings".
	remove_submenu_page('edit.php?post_type=tripzzy_booking', 'tripzzy-settings');
	//Hide "Tripzzy → System Information".
	remove_submenu_page('edit.php?post_type=tripzzy_booking', 'tripzzy-system-info');
}

add_action('admin_menu', 'plt_hide_tripzzy_menus', 1000000000);
Where do I put this code?