[ovirt-users] Created cluster, deleted Data-Center, Recreated Data-Center, Attempted to re-create Cluster (Same Name As Old Cluster), Now Fails

[Schorschi]

Created cluster object, deleted Data-Center object, Recreated 
Data-Center object, Attempted to re-create Cluster object (Same Name As 
Old Cluster), Now Fails.

Error message...
Error while executing action: Cannot create Cluster. Cluster name is 
already in use.

How to I remove existing cluster entry in ovirt database?

Thanks.