LU-20 kernel: remove obsolete kernel patches

LU-20 kernel: remove obsolete kernel patches

The jbd2-jcberr and lustre_version patches have been obsoleted since
Lustre 2.2.  They were kept around to allow transitioning between
Lustre 1.8/2.1 and 2.4/2.5 but can be removed from Lustre 2.6 since
this does not allow a direct upgrade path anyway.

Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Change-Id: I5406272fe22580e48679c18dea562001d23ebbe5
Reviewed-on: http://review.whamcloud.com/7881
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Minh Diep <minh.diep@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>