HK: some stuff ruff and pycodestyle complained about (#4523)

worlds/hk/test/__init__.py

@@ -2,7 +2,6 @@ import typing
 from argparse import Namespace
 from BaseClasses import CollectionState, MultiWorld
 from Options import ItemLinks
-from test.bases import WorldTestBase
 from worlds.AutoWorld import AutoWorldRegister, call_all
 from .. import HKWorld
 

worlds/hk/test/test_grub_count.py

@@ -1,5 +1,6 @@
-from . import linkedTestHK, WorldTestBase
+from test.bases import WorldTestBase
 from Options import ItemLinks
+from . import linkedTestHK
 
 
 class test_grubcount_limited(linkedTestHK, WorldTestBase):