code: def tearDownClass(cls):
      shutdown_ray()
      execute_query_fetch_all(
          cls.evadb, f"DROP JOB IF EXISTS {cls.job_name_1};"
      )
      execute_query_fetch_all(
          cls.evadb, f"DROP JOB IF EXISTS {cls.job_name_2};"
      )
  
file_path: evadb/test/integration_tests/long/test_job_scheduler_execution.py
imports: import time
  import unittest
  from datetime import datetime, timedelta
  from test.util import get_evadb_for_testing, shutdown_ray
  from mock import MagicMock
  from evadb.interfaces.relational.db import EvaDBConnection
  from evadb.server.command_handler import execute_query_fetch_all
label_desc: Use image node_id 4 for calling the JobSchedulerIntegrationTests obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types