code: def teardown_class(self):
      _remove_path(self.mlpackage_path)
      self.mlmodel = None
      self.mlmodel_no_weights = None
  
imports: import os
  import shutil
  import tempfile
  import numpy
  import pytest
  import coremltools
  from coremltools import ComputeUnit, utils
  from coremltools._deps import _HAS_TORCH
  from coremltools.converters.mil import Builder
  from coremltools.libmodelpackage import ModelPackage
  from coremltools.models import MLModel
  from coremltools.models.utils import _MLPACKAGE_AUTHOR_NAME, _WEIGHTS_DIR_NAME
  from coremltools.proto import Model_pb2
label_desc: Use image node_id 2 for calling the TestSpecAndMLModelAPIs obj's underlying member method code with example usage: obj.teardown_class() without return types