code: def destroy_cloudwatch_log_event(app='', env='dev', region=''):
      
  
      session = boto3.Session(profile_name=env, region_name=region)
      cloudwatch_client = session.client('logs')
  
      # FIXME: see below
      # TODO: Log group name is required, where do we get it if it is not in application-master-env.json?
      cloudwatch_client.delete_subscription_filter(logGroupName='/aws/lambda/awslimitchecker', filterName=app)
  
      return True
docs: Destroy Cloudwatch log event.
  
      Args:
          app (str): Spinnaker Application name.
          env (str): Deployment environment.
          region (str): AWS region.
      Returns:
          bool: True upon successful completion.