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

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

tests/test_checks.py

@@ -1,5 +1,5 @@
 from unittest.mock import patch
-import django
+
 from django.conf import settings
 from django.core.checks import Error, Warning, run_checks
 from django.test import SimpleTestCase, override_settings
@@ -10,7 +10,6 @@
 PATH_DOES_NOT_EXIST = os.path.join(settings.BASE_DIR, "tests", "invalid_static")
 
 
-
 class ChecksTestCase(SimpleTestCase):
     @override_settings(
         MIDDLEWARE=[
@@ -253,7 +252,6 @@ def test_check_w007_invalid(self, mocked_guess_type):
             ],
         )
 
-
     def test_debug_toolbar_installed_when_running_tests(self):
         with self.settings(DEBUG=False):
             dt_settings.get_config()["IS_RUNNING_TESTS"] = False