code: def DeleteCampaignFeed(client, campaign_feed):
    
    campaign_feed_service = client.GetService('CampaignFeedService', 'v201809')
  
    operation = {
        'operand': campaign_feed,
        'operator': 'REMOVE'
    }
  
    campaign_feed_service.mutate([operation])
docs: Deletes a campaign feed.
  
    Args:
      client: an AdWordsClient instance.
      campaign_feed: the campaign feed to delete.