code: def tearDown(self) -> None:
      if os.path.exists(TestJitEncrypt.model_path):
          shutil.rmtree(TestJitEncrypt.model_path)
  
imports: from base64 import b64decode, b64encode
  import io
  from multiprocessing import Process
  import time
  from typing import List
  import unittest
  from uuid import uuid4
  import numpy
  import pandas
  import os
  from bigdl.ppml.fl import *
  from torch import Tensor, nn
  import torch
  from bigdl.ppml.fl.utils import FLTest
  import shutil
  from bigdl.dllib.utils.encryption_utils import *
label_desc: Use image node_id 2 for calling the TestJitEncrypt obj's underlying member method code with example usage: obj.tearDown() without return types