My b2evolution Version: 2.4.2

There are (inconclusive?) discussions on this forum about removing files from a database, and allusions to deleting a blog as if that were obvious.

I can't find a way to delete a blog once created.

I have a couple of blogs that went nowhere (news listings for groups that didn't get it together to list on them) and one that was a private discussion that has ended. How do I get rid of them?