pinctrl/u300: drop unused variable

The "i" variable was left after the GPIO range cleanup
moved to core.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-u300.c

@@ -1173,7 +1173,6 @@ static int __devinit u300_pmx_probe(struct platform_device *pdev)
 static int __devexit u300_pmx_remove(struct platform_device *pdev)
 {
 	struct u300_pmx *upmx = platform_get_drvdata(pdev);
-	int i;
 
 	pinctrl_unregister(upmx->pctl);
 	iounmap(upmx->virtbase);