LU-2566 tests: delete obsolete kernel version check

LU-2566 tests: delete obsolete kernel version check

Since the kernel version check that leads to the reported problem
is obsolete it is simplest to just delete the check

Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Change-Id: I190e9d71877268600c877fa156e8911f84f56beb
Reviewed-on: http://review.whamcloud.com/4947
Reviewed-by: Minh Diep <minh.diep@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>