Proposal to remove: sysutils/cdbkup

[Benny Siegert <bsiegert%gmail.com@localhost>]

DESCR says:

cdbkup performs full or incremental backups of local or remote
filesystems onto CD-R(W)s. Results are stored as tarballs on
single- or multi-session ISO CDs. It works either interactively
for multi-CD backups, or non-interactively for single-CD backups.

According to http://gnats.netbsd.org/33293, it does not work with
DVDs. Its upstream development stopped in 2004.

I propose to delete this package after the 2015Q2 branch.

--Benny.