code: def tearDownClass(cls) -> None:
      del os.environ[AIM_REPO_NAME]
      super().tearDownClass()
  
file_path: aim/performance_tests/base.py
imports: import unittest
  import os
  from aim.sdk.configs import AIM_REPO_NAME
  from performance_tests.conftest import TEST_REPO_PATHS
label_desc: Use image node_id 2 for calling the SDKTestBase obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types