def deregister_app_verbose_name(self, app_label):
        try:
            del self.app_verbose_names[app_label]
        except KeyError:
            raise ImproperlyConfigured(
                '%s app label was never registered in django-admin2' % app_label)
Deregisters the given app label. Remove the app label from the
dataset/ETHPy150Open pydanny/django-admin2/djadmin2/core.py/Admin2.deregister_app_verbose_name