viced: Don't use fasttime

viced: Don't use fasttime

For pthreaded builds, the FT_ routines are just wrappers around
gettimeofday() and time(). As viced is now an entirely pthreaded
directory, improve readibility, and reduce our dependencies, by
just calling the operating system routines directly.

Change-Id: I3812ac31bc5eb7d2fcbe47d037d4af3d489d3b81
Reviewed-on: http://gerrit.openafs.org/8029
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>