Remove a couple of unused imports

jedi/inference/filters.py

@@ -3,7 +3,7 @@ Filters are objects that you can use to filter names in different scopes. They
 are needed for name resolution.
 """
 from abc import abstractmethod
-from typing import List, Optional, MutableMapping, Type
+from typing import List, MutableMapping, Type
 import weakref
 
 from parso.tree import search_ancestor

jedi/inference/gradual/utils.py

@@ -1,4 +1,3 @@
-import os
 from pathlib import Path
 
 from jedi.inference.gradual.typeshed import TYPESHED_PATH, create_stub_module