Revert "12/21 modernizations from TG live"

code/game/objects/items/devices/powersink.dm

@@ -5,7 +5,7 @@
 	name = "power sink"
 	icon_state = "powersink0"
 	item_state = "electronic"
-	w_class = WEIGHT_CLASS_BULKY
+	w_class = 4
 	flags = CONDUCT
 	throwforce = 5
 	throw_speed = 1
@@ -52,7 +52,7 @@
 
 	mode = value
 	update_icon()
-	SetLuminosity(0)
+	set_light(0)
 
 /obj/item/device/powersink/attackby(obj/item/I, mob/user, params)
 	if(istype(I, /obj/item/weapon/screwdriver))
@@ -113,7 +113,7 @@
 
 	var/datum/powernet/PN = attached.powernet
 	if(PN)
-		SetLuminosity(5)
+		set_light(5)
 
 		// found a powernet, so drain up to max power from it