code: def tearDown(self):
      del self.model
      del self.elimination_order
  
imports: from unittest import TestCase
  import numpy
  import pandas
  from pgmpy.inference.EliminationOrder import BaseEliminationOrder, MinFill, MinNeighbors, MinWeight, WeightedMinFill
  from pgmpy.models import BayesianNetwork
label_desc: Use image node_id 2 for calling the BaseEliminationTest obj's underlying member method code with example usage: obj.tearDown() without return types