engine: Introducing removeAllInBatch in MassOperationDao

 Introducing removelAllInBatch in MassOperationDao.
This helps to remove multiple entities in a single batch operation.

Change-Id: I95d27f571e32c5a91823511fbf5964ec79282afa
Signed-off-by: Ramesh Nachimuthu <rnachimu@redhat.com>