Mass prune announcement hack (or sql command)?

[Black Tiger]

I wonder if there is a hack for this.

I tried the build in RSSFeeder and used the announcement option.
Now I have about 60 announcement in my announcement manager (admincp) and want to delete them but have to do this piece by piece which takes a loooong time.

Does there exist a hack which can mass-prune announcements?
Or if not, is there a mysql command with which you can delete all announcement messages in 1 time from the database?

They don't dissappear by themselves by means of a certrain crontab do they?

[drsli]

Interesting for me too!