Fix NFS2 compile error

Trond had apparently merged the same patch twice, causing a duplicate
include of the "internal.h" file, with resulting obvious confusion.

Tssk.  I'm the only one allowed to send out trees that don't even
compile! Who does this Trond guy think he is?
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/nfs/nfs2xdr.c

@@ -25,8 +25,6 @@
 #include <linux/nfs_fs.h>
 #include "internal.h"
 
-#include "internal.h"
-
 #define NFSDBG_FACILITY		NFSDBG_XDR
 /* #define NFS_PARANOIA 1 */