def unregister_setting(self, app_label, setting_name):
        name = '.'.join([app_label, setting_name])
        if name not in self.settings:
            raise NotRegistered('The setting %s is not registered' % name)
        del self.settings[name]
dataset/ETHPy150Open django-bmf/django-bmf/djangobmf/core/site.py/Site.unregister_setting/original