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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def destroy_elb(app='', env='dev', region='us-east-1', **_):
 """Destroy ELB Resources. Args: app (str):
 Spinnaker Application name. env (str):
 Deployment environment. region (str):
 AWS region. Returns: True upon successful completion. """

    task_json = get_template(
        template_file='destroy/destroy_elb.json.j2',
        app=app,
        env=env,
        region=region,
        vpc=get_vpc_id(account=env, region=region))

    wait_for_task(task_json)

    return True