deletes some unused variables (#20609)

code/game/gamemodes/setupgame.dm

@@ -16,12 +16,6 @@
 
 /proc/setupgenetics()
 
-	if(prob(50))
-		GLOB.blockadd = rand(-300,300)
-	if(prob(75))
-		GLOB.diffmut = rand(0,20)
-
-
 //Thanks to nexis for the fancy code
 // BITCH I AIN'T DONE YET
 

code/game/mecha/equipment/tools/work_tools.dm

@@ -330,8 +330,6 @@
 	name = "cable layer"
 	desc = "Equipment for engineering exosuits. Lays cable along the exosuit's path."
 	icon_state = "mecha_wire"
-	var/datum/event/event
-	var/turf/old_turf
 	var/obj/structure/cable/last_piece
 	var/obj/item/stack/cable_coil/cable
 	var/max_cable = 1000

code/game/objects/items/weapons/mop.dm

@@ -10,8 +10,6 @@
 	w_class = WEIGHT_CLASS_NORMAL
 	attack_verb = list("mopped", "bashed", "bludgeoned", "whacked")
 	resistance_flags = FLAMMABLE
-	var/mopping = 0
-	var/mopcount = 0
 	var/mopcap = 6
 	var/mopspeed = 30