Remove obsolete CVSROOT directory.
- [DH] CVSROOT/checkoutlist
- [DH] CVSROOT/commitinfo
- [DH] CVSROOT/config
- [DH] CVSROOT/cvswrappers
- [DH] CVSROOT/editinfo
- [DH] CVSROOT/loginfo
- [DH] CVSROOT/modules
- [DH] CVSROOT/notify
- [DH] CVSROOT/rcsinfo
- [DH] CVSROOT/taginfo
- [DH] CVSROOT/verifymsg