How to Hide YayExtra Lite - WooCommerce Extra Product Options Admin Menus

function plt_hide_yayextra_menus() {
	//Hide "YayCommerce".
	remove_menu_page('yaycommerce');
	//Hide "YayCommerce → Help".
	remove_submenu_page('yaycommerce', 'yaycommerce-help');
	//Hide "YayCommerce → Licenses".
	remove_submenu_page('yaycommerce', 'yaycommerce-licenses');
	//Hide "YayCommerce → Other plugins".
	remove_submenu_page('yaycommerce', 'yaycommerce-other-plugins');
}

add_action('admin_menu', 'plt_hide_yayextra_menus', 72);

Where do I put this code?