code: def delete_list_item(list_id, item_id, options={})
        response = connection.post do |req|
          req.url "lists/#{list_id}/deleteitem", {:itemId => item_id}.merge(options)
        end
        return_error_or_body(response, response.body.response.item)
      end
docs: Delete an item from a list: https://developer.foursquare.com/docs/lists/deleteitem
  
   @param [String] list_id - The id of the list to delete item from
   @param [String] item_id = The id of the item to delete from list