LU-2675 lustre: remove linux/lustre_net.h

LU-2675 lustre: remove linux/lustre_net.h

Remove the (mostly) empty header lustre/include/linux/lustre_net.h.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I6ad41b94cf21803ac2f6602c5befea511d02937a
Reviewed-on: http://review.whamcloud.com/11503
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>