two small fixes

- fix unbreakable check to only allow numeric tags (int, short, long, byte)
- remove unnecessary xp scoreboards

smithed_libraries/packs/item/data/smithed.item/functions/impl/durability/damage/force/calc_unbreaking.mcfunction

@@ -8,7 +8,7 @@ execute store result score $unbreaking_lvl smithed.item run data get storage smi
 
 # check if the item is unbreakable
 scoreboard players set $unbreakable smithed.item 0
-execute store result score $unbreakable smithed.item run data get storage smithed.item:main item.tag.Unbreakable
+execute store result score $unbreakable smithed.item run data get storage smithed.item:main item.tag.Unbreakable 1
 execute unless score $unbreakable smithed.item matches 0 run scoreboard players set $unbreaking_lvl smithed.item -1
 
 # if delta is positive (i.e. adding durability), ignore unbreaking

smithed_libraries/packs/item/data/smithed.item/functions/impl/technical/load.mcfunction

@@ -8,7 +8,4 @@ scoreboard players set 16 smithed.const 16
 scoreboard players set 2 smithed.const 2
 scoreboard players set 0 smithed.const 0
 
-scoreboard objectives add smithed.xp xp
-scoreboard objectives add smithed.item.prev_xp dummy
-
 #declare storage smithed.item:main