docstr: CLean up temp dir that stores the TF models.
docstr_tok: ["CLean","up","temp","dir","that","stores","the","TF","models","."]
code: def teardown_class(cls):
      """CLean up temp dir that stores the TF models."""
      cls.temp_dir.cleanup()
  
imports: import itertools
  import os
  import tempfile
  import numpy
  import PIL.Image
  import pytest
  import coremltools
  from coremltools._deps import _HAS_TF_2, _HAS_TORCH, MSG_TF2_NOT_FOUND, MSG_TORCH_NOT_FOUND
  from coremltools.converters.mil import Builder
  from coremltools.converters.mil.testing_reqs import backends, compute_units
label_desc: Use image node_id 2 for calling the TestFlexibleInputShapesTF obj's underlying member method code with example usage: obj.teardown_class(cls) without return types