A few medical-related fixes.

- Fixed another problem related to the crit config
- Recovering from shock won't take forever anymore
- Reduced the max speed at which you suffocate, mainly to make crit slower. If this is found to affect normal suffocation too much, increase HUMAN_MAX_OXYLOSS again.
- Open organs now add a lot of shock, as well.
- Hitting 0 health or below will make you collapse immediately.

code/WorkInProgress/virus2/base.dm

@@ -336,12 +336,6 @@ proc/airborne_can_reach(turf/source, turf/target)
 	activate(var/mob/living/carbon/mob,var/multiplier)
 		mob.toxloss += (2*multiplier)
 
-/datum/disease2/effect/greater/scream
-	name = "Random screaming syndrome"
-	stage = 3
-	activate(var/mob/living/carbon/mob,var/multiplier)
-		mob.say("*scream")
-
 /datum/disease2/effect/greater/drowsness
 	name = "Automated sleeping syndrome"
 	stage = 3