code: def tearDownClass(cls):
      # Clean up.
      query = "USE test_data_source { DROP INDEX test_index }"
      execute_query_fetch_all(cls.evadb, query)
      query = "USE test_data_source { DROP TABLE test_vector }"
      execute_query_fetch_all(cls.evadb, query)
  
file_path: evadb/test/third_party_tests/test_native_similarity_index.py
imports: import unittest
  from test.util import create_sample_image, get_evadb_for_testing, load_functions_for_testing
  import pytest
  from evadb.server.command_handler import execute_query_fetch_all
label_desc: Use image node_id 2 for calling the CreateIndexTest obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types