gpio: gpio-ucb1400.c: Cleaning up null pointer checks that could never happen

Removal of null pointer checks that could never happen

This was found using a static code analysis program called cppcheck

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-ucb1400.c b/drivers/gpio/gpio-ucb1400.c
index 2445fe7..d520dc9 100644
--- a/drivers/gpio/gpio-ucb1400.c
+++ b/drivers/gpio/gpio-ucb1400.c
@@ -70,7 +70,7 @@
 	if (err)
 		goto err;
 
-	if (ucb && ucb->gpio_setup)
+	if (ucb->gpio_setup)
 		err = ucb->gpio_setup(&dev->dev, ucb->gc.ngpio);
 
 err: