removing custom tab from product page

hi there – i have a custom product tab in my products page and can’t figure out how to edit or get rid of it… not sure if this is theme related or not?
you can check it out at http://craft4cheap.com/product/dylusions-in-crushed-grape/#tab4

any help would be appreciated.
(no, i am not using any of the product tabs in the add product page)

thanks!

http://wordpress.org/extend/plugins/woocommerce/