vol: de-orbit test programs

vol: de-orbit test programs

The updateDirInode and listVicepx utilities are obsolete; they no longer
build, are severely bitrotted, and have been largely replaced by
volscan.

While here, also remove other objects that have not been built by default
since before the original IBM import:
- ILIST		ilist.exe
- NAMEI_PROGS	nicreate, nincdec, nino, nilist

Remove all of them from the tree.

Change-Id: I8f68ec425cce5e84bcc5f41d598eec23102109de
Reviewed-on: https://gerrit.openafs.org/13793
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>