Core: optimize away Item.world (#840)

* Core: optimize away Item.world

* Update test/general/TestFill.py

* Test: undo unnecessary changes

* lttp: remove two more Item.world writes

Co-authored-by: black-sliver <59490463+black-sliver@users.noreply.github.com>

worlds/alttp/Dungeons.py

@@ -15,7 +15,6 @@ def create_dungeons(world, player):
                           dungeon_items, player)
         for item in dungeon.all_items:
             item.dungeon = dungeon
-            item.world = world
         dungeon.boss = BossFactory(default_boss, player) if default_boss else None
         for region in dungeon.regions:
             world.get_region(region, player).dungeon = dungeon

worlds/alttp/Rules.py

@@ -935,7 +935,6 @@ def set_trock_key_rules(world, player):
                 else:
                     # A key is required in the Big Key Chest to prevent a possible softlock.  Place an extra key to ensure 100% locations still works
                     item = ItemFactory('Small Key (Turtle Rock)', player)
-                    item.world = world
                     location = world.get_location('Turtle Rock - Big Key Chest', player)
                     location.place_locked_item(item)
                     location.event = True

worlds/alttp/Shops.py

@@ -335,7 +335,6 @@ def create_shops(world, player: int):
                 else:
                     loc.item = ItemFactory(GetBeemizerItem(world, player, 'Nothing'), player)
                     loc.shop_slot_disabled = True
-                loc.item.world = world
                 shop.region.locations.append(loc)
                 world.clear_location_cache()