Delete all Product Attributes

Hi,

We transferred a site from Shopify to Woo commerce.
Problem is that it created a load of product attributes and will take hours to delete them all manually.
Is there a way to delete them all so we can re build them ?
We have tried –
PHP MY Admin with –
`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);

But that just threw up some errors within sql

Any ideas much appreciated
Thanks