massive burndown (#29894)

code/game/objects/items/weapons/storage/backpack.dm

@@ -15,7 +15,6 @@
 	max_w_class = WEIGHT_CLASS_NORMAL
 	max_combined_w_class = 21
 	storage_slots = 21
-	resistance_flags = NONE
 	max_integrity = 300
 	sprite_sheets = list(
 		"Vox" = 'icons/mob/clothing/species/vox/back.dmi',
@@ -98,8 +97,6 @@
 	desc = "Space Santa uses this to deliver toys to all the nice children in space on Christmas! Wow, it's pretty big!"
 	icon_state = "giftbag0"
 	item_state = "giftbag0"
-	w_class = WEIGHT_CLASS_BULKY
-	max_w_class = WEIGHT_CLASS_NORMAL
 	max_combined_w_class = 400 // can store a ton of shit!
 
 /obj/item/storage/backpack/cultpack
@@ -175,7 +172,6 @@
 	desc = "It's a fireproof backpack for Atmospherics Staff."
 	icon_state = "atmospack"
 	item_state = "atmospack"
-	resistance_flags = FIRE_PROOF
 
 /obj/item/storage/backpack/explorer
 	name = "explorer bag"
@@ -782,7 +778,6 @@
 	desc = "Not recommended for wizardly consumption. Recommended for mundane consumption!"
 	icon_state = "holyflask"
 	color = "#DC0000"
-	volume = 100
 	list_reagents = list("dragonsbreath" = 80, "hell_water" = 20)
 
 /obj/item/reagent_containers/drinks/bottle/immortality