code: def tearDown(self):
      if os.path.isfile(self.saved_file_path):
          os.remove(self.saved_file_path)
  
imports: from __future__ import division
  from __future__ import print_function
  from __future__ import absolute_import
  import unittest
  from unittest import skip
  import sys
  import os
  import numpy
  from deeplift.conversion import kerasapi_conversion
  import deeplift.layers
  from deeplift.layers import NonlinearMxtsMode, DenseMxtsMode
  from deeplift.util import compile_func
  import tensorflow
  import keras
  from keras import models
  from keras import backend
label_desc: Use image node_id 9 for calling the TestBatchNorm obj's underlying member method code with example usage: obj.tearDown() without return types