Revert "12/21 modernizations from TG live"

code/controllers/subsystem/squeak.dm

@@ -1,44 +0,0 @@
-var/datum/subsystem/squeak/SSsqueak
-
-// The Squeak
-// because this is about placement of mice mobs, and nothing to do with
-// mice - the computer peripheral
-
-/datum/subsystem/squeak
-	name = "Squeak"
-	priority = 40
-	flags = SS_NO_FIRE
-
-	var/list/exposed_wires = list()
-
-/datum/subsystem/squeak/New()
-	NEW_SS_GLOBAL(SSsqueak)
-
-/datum/subsystem/squeak/Initialize(timeofday)
-	trigger_migration()
-
-/datum/subsystem/squeak/proc/trigger_migration(num_mice=10)
-	find_exposed_wires()
-
-	var/mob/living/simple_animal/mouse/M
-	var/turf/proposed_turf
-
-	while((num_mice > 0) && exposed_wires.len)
-		proposed_turf = pick_n_take(exposed_wires)
-		if(!M)
-			M = new(proposed_turf)
-		else
-			M.forceMove(proposed_turf)
-		if(M.environment_is_safe())
-			num_mice -= 1
-			M = null
-
-/datum/subsystem/squeak/proc/find_exposed_wires()
-	exposed_wires.Cut()
-
-	var/list/all_turfs = block(locate(1,1,1), locate(world.maxx,world.maxy,1))
-	for(var/turf/open/floor/plating/T in all_turfs)
-		if(is_blocked_turf(T))
-			continue
-		if(locate(/obj/structure/cable) in T)
-			exposed_wires += T