[MIRROR] Clears unused research var (#12685)

Co-authored-by: Cameron Lennox <killer65311@gmail.com>

code/modules/integrated_electronics/core/assemblies/circuit_bug.dm

@@ -8,7 +8,6 @@
 	slot_flags = SLOT_EARS
 	max_components = IC_COMPONENTS_BASE
 	max_complexity = 20 // Incredibly low complexity to prevent shenanigans.
-	origin_tech = list(TECH_DATA = 1, TECH_ENGINEERING = 1)
 
 /obj/item/electronic_assembly/circuit_bug/examine(mob/user)
 	. = ..()

code/modules/integrated_electronics/core/printer.dm

@@ -503,7 +503,6 @@
 	icon_state = "upgrade_disk"
 	item_state = "card-id"
 	w_class = ITEMSIZE_SMALL
-	origin_tech = list(TECH_ENGINEERING = 3, TECH_DATA = 4)
 
 /obj/item/disk/integrated_circuit/upgrade/advanced
 	name = "integrated circuit printer upgrade disk - advanced designs"
@@ -513,10 +512,8 @@
 	name = "integrated circuit printer upgrade disk - illegal designs"
 	desc = "Install this into your integrated circuit printer to enhance it.  This one adds new, but illegal designs to the printer."
 	icon_state = "upgrade_disk_illegal"
-	origin_tech = list(TECH_ENGINEERING = 3, TECH_DATA = 4, TECH_ILLEGAL = 1)
 
 /obj/item/disk/integrated_circuit/upgrade/clone
 	name = "integrated circuit printer upgrade disk - circuit cloner"
 	desc = "Install this into your integrated circuit printer to enhance it.  This one allows the printer to duplicate assemblies."
 	icon_state = "upgrade_disk_clone"
-	origin_tech = list(TECH_ENGINEERING = 5, TECH_DATA = 6)