viced: remove dead code CheckHost()

Remove CheckHost().

Reviewed-on: http://gerrit.openafs.org/10580
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 76076708a921aae0635975d418dea4b06d2c1af6)

Change-Id: I7400a874d9d638ed26f30fc46a01ace5857f1300
Reviewed-on: http://gerrit.openafs.org/10602
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>