Make a copy of the partial on that page, unpack the copy so it isn’t a partial any more. Delete the partial and make any changes to the unpacked stack.
Or, just delete the partial on that page and then add whatever it is you only want on that one page.
The whole point of a partial is that it is the same on all pages it’s applied to. If you don’t need it on a page then don’t use it on that page.