LU-6245 libcfs: remove byteorder.h

LU-6245 libcfs: remove byteorder.h

With the cleanup of userland with libcfs we no longer
need the special byte ordering macros. Kernel space
can just use what is provided by the kernel already.

Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Change-Id: Ic154005a24ffae6d6773d4664a6e75d3ead346af
Reviewed-on: http://review.whamcloud.com/16916
Reviewed-by: Frank Zago <fzago@cray.com>
Tested-by: Jenkins
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>