LU-9679 ldlm: remove flock accessor macros

LU-9679 ldlm: remove flock accessor macros

Remove old flock wrapper functions that were never used in the kernel:
flock_type(), flock_set_type(), flock_pid(), flock_set_pid(),
flock_start(), flock_set_start(), flock_end(), flock_set_end()

so that our code is closer to that in the upstream kernel.

Test-Parameters: trivial
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Change-Id: I8709da925f4aa4650088f72d7e26f5e6281cab07
Reviewed-on: https://review.whamcloud.com/27856
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Steve Guminski <stephenx.guminski@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>