LU-3105 mdc: remove capa support

LU-3105 mdc: remove capa support

Remove capa support from the MDC, LMV, and llite layers. Remove the
then unused capa code in lustre/obdclass/ and lustre_capa.h.

Signed-off-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: Id2c260cd11fe4cb753b77af8a42932cde650274b
Reviewed-on: http://review.whamcloud.com/6069
Tested-by: Jenkins
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>