Not seeing a way to delete the ratings, I see a check in place for canDelete in the template but nothing being shown in the rating list or the rating itself.
@Steve atm, by design you can't delete the rating which represents the XenForo Like*. You can disable it however.
Additional ratings can be deleted. Might need some text explaining this
*The original design reason was it didn't know what to-do with the XF like, but this should be mostly removed now. I'll revisit the logic on what happens with an XF like's rating type is removed and will likely allow the stock "like" to deleted.
