LU-9019 libcfs: remove the remaining cfs_time wrappers

LU-9019 libcfs: remove the remaining cfs_time wrappers

In the lustre code various small bits are left of the libcfs time
wrappers. Remove all the remaining wrappers except for the inline
function cfs_time_seconds(). For cfs_time_seconds() we have to
move to nsec_to_jiffies() since msecs_to_jiffies() has become an
inline function in jiffies.h which means HZ can be different on
the installation node verses what the target node is configured
for. Since nsec_to_jiffies() is a normal built in kernel function
we can avoid the LU-5443 issues. For cfs_duration_secs() we use
the internal kernel function jiffies_to_msec() since only the
newest kernels have jiffies_to_nsec() and that function is just
a wrapper around jiffies_to_msec(). All the reset of the libcfs
time abstractions are gone.

Change-Id: I166973071304f1d55a15b1e21fcfbe434ff58199
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: https://review.whamcloud.com/31068
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Ben Evans <bevans@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>