How to Hide Cart2cart: Zen Cart to Woocommerce Plugin Admin Menus

function plt_hide_cart2cart_zen_cart_to_woocommerce_migration_menus() {
	//Hide "Cart2Cart Migration".
	remove_menu_page('cart2cart-migration');
	//Hide "Cart2Cart Migration → Cart2Cart Migration".
	remove_submenu_page('cart2cart-migration', 'cart2cart-migration');
	//Hide "Cart2Cart Migration → How it works".
	remove_submenu_page('cart2cart-migration', 'cart2cart-how-it-works');
	//Hide "Cart2Cart Migration → Additional Services".
	remove_submenu_page('cart2cart-migration', 'cart2cart-additional-services');
	//Hide "Cart2Cart Migration → Live Chat & Help".
	remove_submenu_page('cart2cart-migration', 'cart2cart-migration-help');
	//Hide "Cart2Cart Migration → Settings".
	remove_submenu_page('cart2cart-migration', 'cart2cart-migration-settings');
}

add_action('admin_menu', 'plt_hide_cart2cart_zen_cart_to_woocommerce_migration_menus', 11);

Where do I put this code?