Remove hiding under tables from monkeys

[Sick Ness Monster]

I reckon this would be a good change. I remember a round I played as captain where I got mindslaved, and I summoned the HOS to the Customs desk while the monkey hid underneath and simply mindslaved him when he walked up to the desk. While devilishly effective, it definitely felt a bit unfair and unreasonable to me. Traitors who choose to be monkeys are too strong IMO, and this'd go a long way to amending that.