Refs #27836 -- Fixed cleanup exception in file_storage test.

TemporaryDirectory tries to delete the directory that was already removed.

tests/file_storage/tests.py

@@ -496,9 +496,9 @@ class FileStorageTests(SimpleTestCase):
             self.storage.delete('')
 
     def test_delete_deletes_directories(self):
-        tmp_dir = tempfile.TemporaryDirectory(dir=self.storage.location)
-        self.storage.delete(tmp_dir.name)
-        self.assertFalse(os.path.exists(tmp_dir.name))
+        tmp_dir = tempfile.mkdtemp(dir=self.storage.location)
+        self.storage.delete(tmp_dir)
+        self.assertFalse(os.path.exists(tmp_dir))
 
     @override_settings(
         MEDIA_ROOT='media_root',