Can't Delete Category or Topic Communities

Summary:

I accidentally created duplicates of a category and topic community. I want to delete them.

Content (required):

When I go to select them from the Community admin page, the Delete button is disabled. There are no items in the catalog and I am the only person listed on the Members page (I am listed as the Community Manager, not even a member.)

Why doesn't the community manager or the Learning Specialists have the ability to delete them? If not, is it possible to get these deleted with Oracle ACS' help?

Version (include the version you are using, if applicable):