LU-2675 obdclass: remove uses of lov_stripe_md

LU-2675 obdclass: remove uses of lov_stripe_md

Remove the unused function llog_obd_add(). Remove the unused count and
lsm parameters from llog_cancel(). Move dump_lsm() from obdclass to
the only module that uses it (lov). Remove obd_lov.h.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I38a5fdae210b6317a07d1601c1c93ae8071631ae
Reviewed-on: http://review.whamcloud.com/8545
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Mike Pershin <mike.pershin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>