fs/super.c: unexport user_get_super

There's no modular usage in the kernel and modules shouldn't use this symbol.

---

This patch was already sent on:
- 2 Sep 2005
- 22 Aug 2005
- 30 May 2005
- 13 May 2005
- 1 May 2005
- 23 Apr 2005

@@ -467,8 +467,6 @@
 	return NULL;
 }
 
-EXPORT_SYMBOL(user_get_super);
-
 asmlinkage long sys_ustat(unsigned dev, struct ustat __user * ubuf)
 {
         struct super_block *s;