docstr: teardown any state that was previously setup with a setup_method
  call.
code: def tearDown(self):
      """teardown any state that was previously setup with a setup_method
      call.
      """
      stop_orca_context()
  
file_path: BigDL/python/orca/test/bigdl/orca/test_import.py
imports: from unittest import TestCase
  import pytest
  from bigdl.orca import init_orca_context, stop_orca_context
label_desc: Use image node_id 2 for calling the TestImport obj's underlying member method code with example usage: obj.tearDown() without return types