<?php
// Remove Options
add_filter( 'woocommerce_catalog_orderby', 'custom_woocommerce_remove_filter' );
function custom_woocommerce_remove_filter( $catalog_orderby ) {
	unset( $catalog_orderby['popularity'] );
	unset( $catalog_orderby['rating'] );
	unset( $catalog_orderby['price'] );
	unset( $catalog_orderby['price-desc'] );
	return $catalog_orderby;
}