Disease Refactor (#2021)

code/game/objects/effects/decals/cleanable/robots.dm

@@ -43,7 +43,6 @@
 	desc = "It's black and greasy. Looks like Beepsky made another mess."
 	icon = 'icons/mob/robots.dmi'
 	icon_state = "floor1"
-	var/viruses = list()
 	random_icon_states = list("floor1", "floor2", "floor3", "floor4", "floor5", "floor6", "floor7")
 	blood_state = BLOOD_STATE_OIL
 	bloodiness = MAX_SHOE_BLOODINESS
@@ -52,11 +51,5 @@
 	..()
 	reagents.add_reagent("oil", 30)
 
-/obj/effect/decal/cleanable/oil/Destroy()
-	for(var/datum/disease/D in viruses)
-		D.cure(0)
-	viruses = null
-	return ..()
-
 /obj/effect/decal/cleanable/oil/streak
 	random_icon_states = list("streak1", "streak2", "streak3", "streak4", "streak5")