[MERGED PR] Purgatives and dialysis machine rebalance

[Meggal Bozale]

Strongly against this. The ability to purge toxins from yourself should not rely on a singular machine in medbay. What is the counterplay if a traitor mass poisoning everyone removes the machine? Will QM have to order one, or it will hopefully be scanned? And having only one, a mass-poisoner shouldn't need to care, since only one player would be able to be hooked up a time.

I don't see this as serving any real purpose except to strengthen poison mixes.