Change the options of the WooCommerce orderby dropdown

functions.php

<?php

// add in functions.php of your theme

// Change the options of the WooCommerce orderby dropdown
function modify_woocommerce_orderby( $orderby ) {
    unset($orderby["popularity"]);
    unset($orderby["pricemenu_orderdesc"]);
    unset($orderby["rating"]);
    unset($orderby["date"]);
    // unset($orderby['menu_order']);
    // unset($orderby['price']);
    // unset($orderby['price-desc']);
    return $orderby;
}
add_filter( "woocommerce_catalog_orderby", "modify_woocommerce_orderby", 20 );