tree 911531a9f5c5016f69f447c465e2838b83848df5
parent a977ccd79ed6db95a48be1c599aa398cccc0203a
author zhufl <zhu.fanglei@zte.com.cn> 1505269648 +0800
committer zhufl <zhu.fanglei@zte.com.cn> 1505804461 +0000

Remove one-line helper _delete_volume

volume.base._delete_volume is unnecessary and we can use
bsae.delete_volume directly. This is to remove it.

Change-Id: I655108c52225cf28c34318b672f92f362778670b