Description of problem: Currently memory disks are displayed in the UI/REST but cannot be removed since they are a part of a snapshot, an option should be added to remove memory disks which will remove both disks (the memory dump and the memory metadata) and remove them from the snapshot as well (leave the snapshot as is but without the memory)
Verified on ovirt-engine-4.2.0-0.0.master.20170921184504.gitfcfc9a7.el7.centos Memory disks can be removed and snapshot with memory is getting updated and doesn't contain the memory dump
This bugzilla is included in oVirt 4.2.0 release, published on Dec 20th 2017. Since the problem described in this bug report should be resolved in oVirt 4.2.0 release, published on Dec 20th 2017, it has been closed with a resolution of CURRENT RELEASE. If the solution does not work for you, please open a new bug report.