Revert "[MIRROR] Replace all secondary flags with bitflags stored in the flags_2 var" (#2457)

ok you know what yeah i think i'll properly mirror https://github.com/Citadel-Station-13/Citadel-Station-13/pull/2411

code/game/objects/items/apc_frame.dm

@@ -1,7 +1,7 @@
 /obj/item/wallframe
 	icon = 'icons/obj/wallframe.dmi'
 	materials = list(MAT_METAL=MINERAL_MATERIAL_AMOUNT*2)
-	flags_1 = CONDUCT_1
+	flags = CONDUCT
 	origin_tech = "materials=1;engineering=1"
 	item_state = "syringe_kit"
 	lefthand_file = 'icons/mob/inhands/equipment/medical_lefthand.dmi'
@@ -119,7 +119,7 @@
 	item_state = "electronic"
 	lefthand_file = 'icons/mob/inhands/misc/devices_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/misc/devices_righthand.dmi'
-	flags_1 = CONDUCT_1
+	flags = CONDUCT
 	w_class = WEIGHT_CLASS_SMALL
 	origin_tech = "engineering=2;programming=1"
 	materials = list(MAT_METAL=50, MAT_GLASS=50)