I created a forum using bbpress. One of the forums had

I created a forum using bbpress. One of the forums had the slug charlotte-mason-method. I decided the layout wouldn't meet my users' needs, so I deleted bbpress.

Now I'm installing a Simple:stuck_out_tongue:ress forum and when I try to create a forum with the same slug, the software is addding -1 to the end of the forum name. (Apparently either bbpress didn't remove the file or the software thinks it didn't.)

How can I correct this so that the forum uses the correct slug?

Thanks.