delete unused GYROIOCGHWLOWPASS

src/drivers/bmi055/bmi055_gyro.cpp

@@ -473,12 +473,6 @@ BMI055_gyro::ioctl(struct file *filp, int cmd, unsigned long arg)
 	case GYROIOCSELFTEST:
 		return gyro_self_test();
 
-#ifdef GYROIOCGHWLOWPASS
-
-	case GYROIOCGHWLOWPASS:
-		return _dlpf_freq;
-#endif
-
 	default:
 		/* give it to the superclass */
 		return SPI::ioctl(filp, cmd, arg);

src/drivers/bmi160/bmi160.cpp

@@ -824,12 +824,6 @@ BMI160::gyro_ioctl(struct file *filp, int cmd, unsigned long arg)
 	case GYROIOCSELFTEST:
 		return gyro_self_test();
 
-#ifdef GYROIOCGHWLOWPASS
-
-	case GYROIOCGHWLOWPASS:
-		return _dlpf_freq;
-#endif
-
 	default:
 		/* give it to the superclass */
 		return SPI::ioctl(filp, cmd, arg);

src/drivers/drv_gyro.h

@@ -100,9 +100,6 @@ struct gyro_calibration_s {
 /** check the status of the sensor */
 #define GYROIOCSELFTEST		_GYROIOC(8)
 
-/** get the hardware low-pass filter cut-off in Hz*/
-#define GYROIOCGHWLOWPASS	_GYROIOC(10)
-
 /** determine if hardware is external or onboard */
 #define GYROIOCGEXTERNAL	_GYROIOC(12)
 

src/drivers/mpu9250/mpu9250.cpp

@@ -1004,12 +1004,6 @@ MPU9250::gyro_ioctl(struct file *filp, int cmd, unsigned long arg)
 	case GYROIOCSELFTEST:
 		return gyro_self_test();
 
-#ifdef GYROIOCGHWLOWPASS
-
-	case GYROIOCGHWLOWPASS:
-		return _dlpf_freq;
-#endif
-
 	default:
 		/* give it to the superclass */
 		return CDev::ioctl(filp, cmd, arg);