'Delete replications associated with a given volume.
We should be able to roll through the replication_driver_data list
of SSNs and delete replication objects between them and the source
volume.
:param api: Dell REST API object.
:param volume: Cinder Volume object
:return: None'

def _delete_replications(self, api, volume):

    replication_driver_data = volume.get('replication_driver_data')
    if replication_driver_data:
        ssnstrings = self._split_driver_data(replication_driver_data)
        volume_name = volume.get('id')
        provider_id = volume.get('provider_id')
        scvol = api.find_volume(volume_name, provider_id)
        for ssnstring in ssnstrings:
            ssn = int(ssnstring)
            if (not api.delete_replication(scvol, ssn)):
                LOG.warning('Unable    to    delete    replication    of    Volume    %(vname)s    to    Storage    Center    %(sc)s.', {'vname': volume_name, 'sc': ssnstring})
