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

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

Author: pre-commit-ci[bot]

testing/test_monkeypatch.py

@@ -9,8 +9,6 @@
 import textwrap
 import warnings
 
-import setuptools
-
 from _pytest.monkeypatch import MonkeyPatch
 from _pytest.pytester import Pytester
 import pytest