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/weapons/melee/energy.dm

@@ -72,7 +72,7 @@
 	throw_range = 5
 	w_class = WEIGHT_CLASS_NORMAL
 	w_class_on = WEIGHT_CLASS_HUGE
-	flags_1 = CONDUCT_1
+	flags = CONDUCT
 	armour_penetration = 100
 	origin_tech = "combat=4;magnets=3"
 	attack_verb_off = list("attacked", "chopped", "cleaved", "torn", "cut")

code/game/objects/items/weapons/melee/misc.dm

@@ -16,7 +16,7 @@
 	item_state = "chain"
 	lefthand_file = 'icons/mob/inhands/weapons/melee_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/weapons/melee_righthand.dmi'
-	flags_1 = CONDUCT_1
+	flags = CONDUCT
 	slot_flags = SLOT_BELT
 	force = 10
 	throwforce = 7
@@ -51,7 +51,7 @@
 	item_state = "sabre"
 	lefthand_file = 'icons/mob/inhands/weapons/swords_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/weapons/swords_righthand.dmi'
-	flags_1 = CONDUCT_1
+	flags = CONDUCT
 	unique_rename = 1
 	force = 15
 	throwforce = 10