staging: lustre: remove unneeded include.

cfs_hash usage was removed from cl_object.c
some time ago, so remove the #include as well.
Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/obdclass/cl_object.c

@@ -53,7 +53,6 @@
 #include <obd_support.h>
 #include <lustre_fid.h>
 #include <linux/list.h>
-#include <linux/libcfs/libcfs_hash.h>	/* for cfs_hash stuff */
 #include <cl_object.h>
 #include <lu_object.h>
 #include "cl_internal.h"