def remove_services(self, services_to_remove=[]):
        """
        Remove all service names specified in ``services_to_remove`` from
        ``self.services``. This allows explicitly removing certain services from
        ever being checked or otherwise handled.

        By default, the various methods that work on Services (i.e.
        :py:meth:`~.get_limits`, :py:meth:`~.find_usage` and
        :py:meth:`~.check_thresholds`) operate on either all known services,
        or one specified service name at a time. This method allows you to
        remove one or more problematic or undesirable services from the dict
        of all services, and then operate on the remaining ones.

        :param services_to_remove: the name(s) of one or more services to
          permanently exclude from future calls to this instance
        :type service_to_skip: list
        """
        for sname in services_to_remove:
            logger.warning('Skipping service: %s', sname)
            self.services.pop(sname, None)