Delete a collection template created as duplicate of seeded template

Summary:

For GOP support in B2B scenario, I would like to create a collection template that fits the needs. But first one I created was in the 'Manage Collection Templates' screen via Duplicating a seeded template. It does get a custom name and description and takes the values from the seeded template.

But we like to select the criteria manually and make the set complete to our specific needs. Then Save as Template. That works as well.

A Template created by "Save as Template", I can delete. But I cannot delete a Template that is a duplicate of a seeded Template as it seems it is treated as Seed Data that cannot be removed? So now we are stuck with a new template that we don't need nor want and we cannot remove … or can we?