[IA64] one-line cleanup on set_irq_affinity_info

Calls to set_irq_info in set_irq_affinity_info() is redundant because
irq_affinity mask was set just one line immediately above it.  Remove
that duplicate call.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
index 5ce908e..9c72ea3f 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -101,7 +101,6 @@
 
 	if (irq < NR_IRQS) {
 		irq_affinity[irq] = mask;
-		set_irq_info(irq, mask);
 		irq_redir[irq] = (char) (redir & 0xff);
 	}
 }