Hello,
Thank you very much for choosing our theme and for contacting us.
I cannot figure out which one you want to delete, so I give you information for all the tabs on the product page:
Description – is the main description on the product page. If you clean the product description it would be cleaned.
Reviews are disabled in the Woocommerce > Settings > Product.
Additional tab (with the attributes) enter each attribute in the product page and disable showing on the product page.
Additional tab (Shipping information) You can edit it in the Theme Settings > Product page > Tabs: Clean all the content.
Best Regards