minor deathmatch fixes (#91192)

## About The Pull Request
split personality may not roll if the target is in a deathmatch area
bolt of possession deals 25 brain damage if the target is in a
deathmatch area (8 hits for brain death)
removed a camera from the meta brig map
Disciple of Pete has 9 tile range signalers instead (that nobody uses
anyway lmao because you cant use them for minibombs or the other
grenades)

## Why It's Good For The Game

fixes #91171
fixes #90912
fixes #89212

## Changelog
🆑
fix: removed a camera from the deathmatch meta brig map, disciple of
pete has low-range signalers, deathmatch bolt of possession deals brain
damage instead, split personality may not roll in deathmatch
/🆑

code/modules/projectiles/projectile/magic.dm

@@ -353,6 +353,10 @@
 /obj/projectile/magic/wipe/on_hit(mob/living/carbon/target, blocked = 0, pierce_hit)
 	. = ..()
 	if(iscarbon(target))
+		if(istype(get_area(target), /area/deathmatch))
+			target.adjustOrganLoss(ORGAN_SLOT_BRAIN, 25) // Roughly 8 hits to kill
+			target.visible_message(span_warning("[target] grips their head in pain!"))
+			return BULLET_ACT_HIT
 		for(var/x in target.get_traumas())//checks to see if the victim is already going through possession
 			if(istype(x, /datum/brain_trauma/special/imaginary_friend/trapped_owner))
 				target.visible_message(span_warning("[src] vanishes on contact with [target]!"))