How to Hide the "WooCommerce Multilingual" Admin Menu

function plt_hide_woocommerce_multilingual_menus() {
	//Hide the "WooCommerce Multilingual" menu.
	remove_menu_page('wpml-wcml');
}

add_action('admin_menu', 'plt_hide_woocommerce_multilingual_menus', 81);

Where do I put this code?