staging/lustre/o2iblnd: remove kib_sysctl

we have #define CFS_SYSFS_MODULE_PARM  1
so it is indeed dead code.

Cc: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>