code: def tearDown(self) -> None:
      K.clear_session()
      for image in glob("*.png"):
          os.remove(image)
  
file_path: keract/tests/display_activations_test.py
imports: import os
  import unittest
  from glob import glob
  import numpy
  import tensorflow.keras.backend
  from tensorflow.keras import Input, Model
  from tensorflow.keras.layers import Dense
  from keract import get_activations, display_activations
  from keract.keract import _convert_1d_to_2d
label_desc: Use image node_id 2 for calling the DisplayActivationsTest obj's underlying member method code with example usage: obj.tearDown() without return types