staging/lustre/lnet: remove empty file lnet/lnet/api-errno.c

The file is empty. We can just remove it.

Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2335
Lustre-change: http://review.whamcloud.com/5880Reviewed-by: NLiang Zhen <liang.zhen@intel.com>
Reviewed-by: NLi Wei <wei.g.li@intel.com>
Reviewed-by: NIsaac Huang <he.huang@intel.com>
Reviewed-by: NOleg Drokin <oleg.drokin@intel.com>
Signed-off-by: NPeng Tao <tao.peng@emc.com>
Signed-off-by: NAndreas Dilger <andreas.dilger@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lnet/lnet/Makefile

 obj-$(CONFIG_LNET) += lnet.o
 
-lnet-y := api-errno.o api-ni.o config.o lib-me.o lib-msg.o lib-eq.o	\
+lnet-y := api-ni.o config.o lib-me.o lib-msg.o lib-eq.o	\
 	  lib-md.o lib-ptl.o lib-move.o module.o lo.o router.o		\
 	  router_proc.o acceptor.o peer.o
 

drivers/staging/lustre/lnet/lnet/api-errno.c

-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lnet/lnet/api-errno.c
- *
- * Instantiate the string table of errors
- */
-
-/* If you change these, you must update the number table in portals/errno.h */