How to delete all WooCommerce attributes

To delete all WooCommerce attributes login to phpMyAdmin and run this SQL.
DELETE FROM wp_terms WHERE term_id IN
(SELECT term_id FROM wp_term_taxonomy WHERE taxonomy LIKE ‘pa_%’);
DELETE FROM wp_term_taxonomy WHERE taxonomy LIKE ‘pa_%’;
DELETE FROM wp_term_relationships WHERE term_taxonomy_id not IN
(SELECT term_taxonomy_id FROM wp_term_taxonomy);