Nullify all armor that is equal to armor = null (#30116)

* nullifier

* manually remove identical vars

code/game/objects/items/RSF.dm

@@ -8,7 +8,6 @@
 	icon = 'icons/obj/tools.dmi'
 	icon_state = "rsf"
 	item_state = "rsf"
-	armor = list(MELEE = 0, BULLET = 0, LASER = 0, ENERGY = 0, BOMB = 0, RAD = 0, FIRE = 0, ACID = 0)
 	var/atom/currently_dispensing
 	var/power_mode = POWER_NONE
 

code/game/objects/items/weapons/kitchen.dm

@@ -160,7 +160,7 @@
 	materials = list()
 	origin_tech = "biotech=3;combat=2"
 	attack_verb = list("shanked", "shivved")
-	armor = list(MELEE = 0, BULLET = 0, LASER = 0, ENERGY = 0, BOMB = 0, RAD = 0, FIRE = 0, ACID = 0)
+	armor = null
 
 /obj/item/kitchen/knife/butcher
 	name = "butcher's cleaver"

code/game/objects/items/weapons/shields.dm

@@ -50,7 +50,7 @@
 
 /obj/item/shield/riot/roman/fake
 	desc = "Bears an inscription on the inside: <i>\"Romanes venio domus\"</i>. It appears to be a bit flimsy."
-	armor = list(melee = 0, bullet = 0, laser = 0, energy = 0, bomb = 0, rad = 0, fire = 0, acid = 0)
+	armor = null
 
 /obj/item/shield/riot/roman/fake/add_parry_component()
 	return