diff --git a/test/test_diff.py b/test/test_diff.py
@@ -3,6 +3,7 @@
# This module is part of GitPython and is released under the
# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/

import os
import os.path as osp
import shutil
@@ -27,8 +28,6 @@ def setUp(self):
        self.submodule_dir = tempfile.mkdtemp()

    def tearDown(self):
-        import gc
-
        gc.collect()
        shutil.rmtree(self.repo_dir)
        shutil.rmtree(self.submodule_dir)