def delete_permissions(self, grp_name, resource):
        """Removes permissions from the group for the given resource.

        Args:
            grp_name (string): Name of group.
            resource (intern.resource.boss.BossResource): Identifies which data model object to operate on.

        Raises:
            requests.HTTPError on failure.
        """
        self.service.delete_permissions(
            grp_name, resource, self.url_prefix, self.auth, self.session, self.session_send_opts)