unused var axing

code/game/objects/items/robot/robot_upgrades.dm

@@ -6,8 +6,6 @@
 	desc = "Protected by FRM."
 	icon = 'icons/obj/module.dmi'
 	icon_state = "cyborg_upgrade"
-	var/construction_time = 120
-	var/construction_cost = list("metal"=10000)
 	var/locked = 0
 	var/require_module = 0
 	var/installed = 0
@@ -50,7 +48,6 @@
 	name = "robot reclassification board"
 	desc = "Used to rename a cyborg."
 	icon_state = "cyborg_upgrade1"
-	construction_cost = list("metal"=35000)
 	var/heldname = "default name"
 
 /obj/item/borg/upgrade/rename/attack_self(mob/user as mob)
@@ -68,7 +65,6 @@
 /obj/item/borg/upgrade/restart
 	name = "robot emergency restart module"
 	desc = "Used to force a restart of a disabled-but-repaired robot, bringing it back online."
-	construction_cost = list("metal"=60000 , "glass"=5000)
 	icon_state = "cyborg_upgrade1"
 
 
@@ -92,7 +88,6 @@
 /obj/item/borg/upgrade/vtec
 	name = "robotic VTEC Module"
 	desc = "Used to kick in a robot's VTEC systems, increasing their speed."
-	construction_cost = list("metal"=80000 , "glass"=6000 , "gold"= 5000)
 	icon_state = "cyborg_upgrade2"
 	require_module = 1
 
@@ -109,7 +104,6 @@
 /obj/item/borg/upgrade/disablercooler
 	name = "robotic Rapid Disabler Cooling Module"
 	desc = "Used to cool a mounted disabler, increasing the potential current in it and thus its recharge rate."
-	construction_cost = list("metal"=80000 , "glass"=6000 , "gold"= 2000, "diamond" = 500)
 	icon_state = "cyborg_upgrade3"
 	require_module = 1
 
@@ -144,7 +138,6 @@
 /obj/item/borg/upgrade/jetpack
 	name = "mining robot jetpack"
 	desc = "A carbon dioxide jetpack suitable for low-gravity mining operations."
-	construction_cost = list("metal"=10000,"plasma"=15000,"uranium" = 20000)
 	icon_state = "cyborg_upgrade3"
 	require_module = 1
 
@@ -211,7 +204,6 @@
 /obj/item/borg/upgrade/syndicate/
 	name = "Illegal Equipment Module"
 	desc = "Unlocks the hidden, deadlier functions of a robot"
-	construction_cost = list("metal"=10000,"glass"=15000,"diamond" = 10000)
 	icon_state = "cyborg_upgrade3"
 	require_module = 1