Removes a redundant #ifdef CONFIG_SMP that is nested within an enclosing
#ifdef CONFIG_SMP.

Signed-off-by: <paulmck@us.ibm.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>