vCAC6.0:how to delete Inactive Catalog Item

Hello,

I am struggling to cleanup inactive non-existing catalog item which are still present in Catalog Item List. i had un-mapped those Catalog Item from Entitlements and Services but still those are present in Catalog item listings.

I am not getting any delete option from the action menu for inactive Catalog item, please let me find a way to clean it up.

Thanks ,

Mohit Goyal