LU-1199 rpm: remove SLES10 support

LU-1199 rpm: remove SLES10 support

SLES10 is out of scope for Lustre 2.4 so we can drop
the spec file hacks.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Change-Id: I94ea2164a4b339ab26825058678b54859d2617a8
Reviewed-on: http://review.whamcloud.com/5490
Tested-by: Hudson
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Minh Diep <minh.diep@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>