code: def del_all_host_comments(self, host):
          
          comments = list(host.comments.keys())
          for uuid in comments:
              host.del_comment(uuid)
          self.send_an_element(host.get_update_status_brok())
docs: Delete all host comments
          Format of the line that triggers function call::
  
          DEL_ALL_HOST_COMMENTS;<host_name>
  
          :param host: host to edit
          :type host: alignak.objects.host.Host
          :return: None