You can delete a property sheet using the pcmadmin tool.
Important: The delete option allows you to delete Property Sheets for Objects that currently exist in the database and are being used in the hierarchy in the Contenta Explorer. You must be careful not to delete a Property Sheet that is associated with an Object or another Property Sheet. You can corrupt your database if you do so. You must remove the association between the Property Sheet and the Objects—that is, remove the Property Sheet field from Contenta Objects—before deleting the Property Sheet.