AFS: drop explicit extern

Don't use explicit extern specifier and quieten sparse warning:
fs/afs/vnode.c:564:12: warning: function 'afs_vnode_link' with external linkage has definition

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/afs/vnode.c b/fs/afs/vnode.c
index ac811e4..2f05c4f 100644
--- a/fs/afs/vnode.c
+++ b/fs/afs/vnode.c
@@ -561,7 +561,7 @@
 /*
  * create a hard link
  */
-extern int afs_vnode_link(struct afs_vnode *dvnode, struct afs_vnode *vnode,
+int afs_vnode_link(struct afs_vnode *dvnode, struct afs_vnode *vnode,
 			  struct key *key, const char *name)
 {
 	struct afs_server *server;