LU-9019 obd: remove s2dhms time function

LU-9019 obd: remove s2dhms time function

Lustre created the s2dhms function to report a time
lapse in a days:hour:minute:seconds format. This is
over kill so remove s2dhms and just report the number
of seconds that has lapse.

Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Change-Id: I834661e57bf14c5ae397a40784bdec69b9bd55a8
Reviewed-on: https://review.whamcloud.com/23269
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>