ARM: mach-shmobile: Kill off unused !gpio_is_valid() case

The Card Detect GPIOs used on AP4EVB and Mackerel are
alwayws valid, so kill off the unused !gpio_is_valid()
case.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/arm/mach-shmobile/board-ap4evb.c

@@ -247,10 +247,7 @@ static struct platform_device smc911x_device = {
  */
 static int slot_cn7_get_cd(struct platform_device *pdev)
 {
-	if (gpio_is_valid(GPIO_PORT41))
 	return !gpio_get_value(GPIO_PORT41);
-	else
-		return -ENXIO;
 }
 
 /* SH_MMCIF */

arch/arm/mach-shmobile/board-mackerel.c

@@ -657,10 +657,7 @@ static struct platform_device fsi_ak4643_device = {
  */
 static int slot_cn7_get_cd(struct platform_device *pdev)
 {
-	if (gpio_is_valid(GPIO_PORT41))
 	return !gpio_get_value(GPIO_PORT41);
-	else
-		return -ENXIO;
 }
 
 /* SDHI0 */