delete unused GPIO_GET

src/drivers/drv_gpio.h

@@ -89,9 +89,6 @@
 /** clear the GPIOs in (arg) */
 #define GPIO_CLEAR	GPIOC(11)
 
-/** read all the GPIOs and return their values in *(uint32_t *)arg */
-#define GPIO_GET	GPIOC(12)
-
 #define GPIO_SENSOR_RAIL_RESET	GPIOC(13)
 
 #define GPIO_PERIPHERAL_RAIL_RESET	GPIOC(14)

src/drivers/px4fmu/fmu.cpp

@@ -2928,10 +2928,6 @@ PX4FMU::gpio_ioctl(struct file *filp, int cmd, unsigned long arg)
 		ret = gpio_write(arg, cmd);
 		break;
 
-	case GPIO_GET:
-		ret = gpio_read((uint32_t *)arg);
-		break;
-
 	default:
 		ret = -ENOTTY;
 	}

src/drivers/px4io/px4io.cpp

@@ -2746,10 +2746,6 @@ PX4IO::ioctl(file *filep, int cmd, unsigned long arg)
 		ret = -EINVAL;
 		break;
 
-	case GPIO_GET:
-		ret = -EINVAL;
-		break;
-
 	case MIXERIOCGETOUTPUTCOUNT:
 		*(unsigned *)arg = _max_actuators;
 		break;