/* 

Remove finished auctions from related products.

this code should be placed in child theme functions.php file 

*/
add_filter( 'woocommerce_product_related_posts_query', 'custom_remove_finished_auctions_from_related_products' );
function custom_remove_finished_auctions_from_related_products( $query ) {
	$finished_auctions = wsa_get_finished_auctions_id();
	if (  count( $finished_auctions ) ) {
			$query['where'] .= ' AND p.ID NOT IN ( ' . implode( ',', array_map( 'absint', $finished_auctions ) ) . ' )';
	}
	return $query;
}