Woocommerce remove items from sorting dropdown

woocommerce-functions.php

/**
 * Woocommerce Sorting Dropdown
 * @param $orderby
 * @return mixed
 *
 * Remove items from sorting dropdown
 */
function ls_woocommerce_catalog_orderby( $orderby ) {
    // We still need to add the functionality that actually does the sorting
    $orderby['oldest_to_recent'] = __( 'Sort by date: oldest to newest', 'woocommerce' );
    // Change the default "Sort by newness" to "Sort by date: newest to oldest"
    $orderby["date"] = __('Sort by date: newest to oldest', 'woocommerce');
    // Remove rating, price & price-desc
    unset($orderby["rating"]);
    unset($orderby["price"]);
    unset($orderby["price-desc"]);
    return $orderby;
}
add_filter( 'woocommerce_catalog_orderby', 'ls_woocommerce_catalog_orderby', 20 );