The method for sending BackupInstanceFaulty messages
        if backups instances performance were degraded
        :param degraded_backups: list of backup instances
        ids which performance were degraded
        :return:

def on_backup_degradation(self, degraded_backups) -> None:
        '''
        The method for sending BackupInstanceFaulty messages
        if backups instances performance were degraded
        :param degraded_backups: list of backup instances
        ids which performance were degraded
        :return:
        '''
        self.__remove_replicas(degraded_backups,
                               Suspicions.BACKUP_PRIMARY_DEGRADED,
                               self.node.config.REPLICAS_REMOVING_WITH_DEGRADATION)