CVS: remove empty dir that never had files

When I added a new top level directory to the repository, I accidentally created a double path, e.g.  mydir/mydir instead of just mydir at the top of the repository tree.   I tried to do the normal cvs delete or the directory, but since it's empty it doesn't do anything.

since I never had files in it and don't need any history or archived files from it, how can I remove it for good?

Thx
KM