Can I remove a revision?

Hi,

I'm wondering if it's possible to remove the most recent commit to a
repository? I'm assuming I can't just go and remove the revision file under
path_to_repos/db/revs/ without breaking things. As before, I'm running SVN
v1.3.2 on Linux (Fedora Core 5), using an FSFS backend on a NFS filesystem.

This is related to an earlier problem I received no reply about -
http://svn.haxx.se/users/archive-2007-03/1449.shtml - I did try to make my
email clear and detailed, and I don't think the question has been answered
before. Let me know if I can make anything clearer.

Thanks,

Partha

-- 
Partha Lal
PhD Student
CSTR, University of Edinburgh