These files correspond to the old nix contrib tools,
which are unused (no package server, no new packages created, etc.).
I forgot to include them in the nocontrib patch time ago.

Reference: /n/patches.lsub.org/patch/nocontrib2
Date: Mon Apr 23 13:27:22 CES 2012
Signed-off-by: nemo@lsub.org

# rm /rc/bin/pm
# rm /sys/man/1/pm