arm: omap1: mbox: delete unused variable

Delete unused variable from probe().
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/mailbox.c

@@ -145,7 +145,6 @@ static int __devinit omap1_mbox_probe(struct platform_device *pdev)
 {
 	struct resource *mem;
 	int ret;
-	int i;
 	struct omap_mbox **list;
 
 	list = omap1_mboxes;