code: def tearDown(self):
      teardown_imports()
      undo_replace_with_jit()
      del self.model_config
      gc.collect()
  
file_path: mmf/tests/models/test_vilbert.py
imports: import gc
  import unittest
  import tests.test_utils
  import torch
  from mmf.modules.hf_layers import undo_replace_with_jit
  from mmf.utils.build import build_model
  from mmf.utils.configuration import Configuration
  from mmf.utils.env import setup_imports, teardown_imports
label_desc: Use image node_id 2 for calling the TestViLBertTorchscript obj's underlying member method code with example usage: obj.tearDown() without return types