Romney might, as he's verbally had enough of the dumb shit. Not sure there is anyone else, though.
Romney already voted to impeach once. I don't think there is any question he will vote yes again after yesterday.
If this had happened a month ago and there were six weeks left in Trump's presidency I think there might be enough R support to push it over the edge. Now, though, I think most will use "well he has less than two weeks left so this is pointless" as cover to justify a No vote.