OK, thanks, tried the 1st with no luck.
I’d tried the second already using code here https://docs.woothemes.com/document/editing-product-data-tabs/
and it did indeed remove the tabs, but broke the SS element of the theme. The white background seems to require the tabs otherwise it contracts to a narrow bar at the top.
I did have the technical details tab disabled as well though, so there were no tabs at all, and when it’s re-enabled, the background behaves itself.
That’ll do. Thanks.