[MERGED PR] First aid kits no longer get health analyzers

[RubberRats]

Was a bit skeptical of this at first, but I think it would be OK overall. I am a bit concerned about the toxin first aid kit, seeing as there isn't a way to reliably diagnose toxin damage without a health analyzer. If I can find the motivation later this week I'll try making a test kit for it in line with the other doctoring tools.