[MIPS] Remove old junk left from old atomic_lock.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

include/asm-mips/atomic.h

@@ -9,16 +9,8 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 1996, 97, 99, 2000, 03, 04 by Ralf Baechle
+ * Copyright (C) 1996, 97, 99, 2000, 03, 04, 06 by Ralf Baechle
  */
-
-/*
- * As workaround for the ATOMIC_DEC_AND_LOCK / atomic_dec_and_lock mess in
- * <linux/spinlock.h> we have to include <linux/spinlock.h> outside the
- * main big wrapper ...
- */
-#include <linux/spinlock.h>
-
 #ifndef _ASM_ATOMIC_H
 #define _ASM_ATOMIC_H