code: def tearDownClass(cls):
      del cls.realpath, cls.path
  
imports: from idlelib import grep
  import unittest
  from test.support import captured_stdout
  from idlelib.idle_test.mock_tk import Var
  import os
  import re
label_desc: Use image node_id 2 for calling the FindfilesTest obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types