[@johnhiler Member 15 years, 6 months ago]

There’s no way to do this for now, other than deleting directly from the db using phpMyAdmin.

There was a script posted here, but it appears to be only for v 1.0+, and it doesn’t look like it’s wrapped up in a plugin:

https://bbpress.org/forums/topic/permanently-deleting-topocs-and-posts