Remove duplicated line from _do_attachment_delete
@@ -4159,7 +4159,6 @@ class VolumeManager(manager.CleanableManager,
has_shared_connection = self._connection_terminate(context,
vref,
attachment)
- self.driver.detach_volume(context, vref, attachment)
try:
LOG.debug('Deleting attachment %(attachment_id)s.',
{'attachment_id': attachment.id},
