fix: remove conflicting games itemgroup (cataclysmbnteam#3491)

* fix save breaking bug

update item groups to remove Fuji structures game item group, add cards to it.

* Fixes

Removed "cards" as "deck_of_cards" is the same item. My bad. I also didn't catch Zlor added all of the items in this mod to mainline. Removed the file.

data/mods/Fuji_Structures/items/itemgroups.json

@@ -3,23 +3,5 @@
     "type": "item_group",
     "id": "gunshop_accessories",
     "items": [ [ "powered_earmuffs", 50 ], [ "ear_plugs", 80 ] ]
-  },
-  {
-    "type": "item_group",
-    "id": "games",
-    "items": [
-      [ "chess", 50 ],
-      [ "checkers", 50 ],
-      [ "cards", 50 ],
-      [ "cards_magic", 50 ],
-      [ "pictionary", 50 ],
-      [ "monopoly", 50 ],
-      [ "dnd", 50 ],
-      [ "g_warhammer", 50 ],
-      [ "g_warhammer40k", 50 ],
-      [ "catan", 50 ],
-      [ "battleship", 50 ],
-      [ "clue", 50 ]
-    ]
   }
 ]