[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

mypy/checker.py

@@ -235,7 +235,7 @@
     is_literal_type,
     is_named_instance,
 )
-from mypy.types_utils import is_overlapping_none, remove_optional, store_argument_type, strip_type
+from mypy.types_utils import store_argument_type, strip_type
 from mypy.typetraverser import TypeTraverserVisitor
 from mypy.typevars import fill_typevars, fill_typevars_with_any, has_no_typevars
 from mypy.util import is_dunder, is_sunder

mypy/meet.py

@@ -3,7 +3,6 @@
 from collections.abc import Callable
 
 from mypy import join
-from mypy.erasetype import erase_type
 from mypy.maptype import map_instance_to_supertype
 from mypy.state import state
 from mypy.subtypes import (