vfs: Remove useless function prototypes

Commit 8e22cc88d68ca1a46d7d582938f979eb640ed30f removes the (un)lock_super
function definitions but forgets to remove their prototypes.

Signed-off-by: Alessio Igor Bogani <abogani@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index a0c5ba5..05cd238 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1445,10 +1445,6 @@
 
 extern bool inode_owner_or_capable(const struct inode *inode);
 
-/* not quite ready to be deprecated, but... */
-extern void lock_super(struct super_block *);
-extern void unlock_super(struct super_block *);
-
 /*
  * VFS helper functions..
  */