delete unused IOCTL GYROIOCSSAMPLERATE

src/drivers/imu/adis16448/adis16448.cpp

@@ -1117,10 +1117,6 @@ ADIS16448::gyro_ioctl(struct file *filp, int cmd, unsigned long arg)
 			return OK;
 		}
 
-	case GYROIOCSSAMPLERATE:
-		_set_sample_rate(arg);
-		return OK;
-
 	case GYROIOCSSCALE:
 		/* copy scale in */
 		memcpy(&_gyro_scale, (struct gyro_calibration_s *) arg, sizeof(_gyro_scale));

src/drivers/imu/adis16477/ADIS16477.cpp

@@ -438,10 +438,6 @@ ADIS16477::gyro_ioctl(struct file *filp, int cmd, unsigned long arg)
 	case SENSORIOCRESET:
 		return ioctl(filp, cmd, arg);
 
-	case GYROIOCSSAMPLERATE:
-		_set_sample_rate(arg);
-		return OK;
-
 	case GYROIOCSSCALE:
 		/* copy scale in */
 		memcpy(&_gyro_scale, (struct gyro_calibration_s *) arg, sizeof(_gyro_scale));

src/drivers/imu/bmi055/BMI055_gyro.cpp

@@ -399,9 +399,6 @@ BMI055_gyro::ioctl(struct file *filp, int cmd, unsigned long arg)
 			return OK;
 		}
 
-	case GYROIOCSSAMPLERATE:
-		return gyro_set_sample_rate(arg);
-
 	case GYROIOCSSCALE:
 		/* copy scale in */
 		memcpy(&_gyro_scale, (struct gyro_calibration_s *) arg, sizeof(_gyro_scale));

src/drivers/imu/bmi160/bmi160.cpp

@@ -700,9 +700,6 @@ BMI160::gyro_ioctl(struct file *filp, int cmd, unsigned long arg)
 			return OK;
 		}
 
-	case GYROIOCSSAMPLERATE:
-		return gyro_set_sample_rate(arg);
-
 	case GYROIOCSSCALE:
 		/* copy scale in */
 		memcpy(&_gyro_scale, (struct gyro_calibration_s *) arg, sizeof(_gyro_scale));

src/drivers/imu/fxas21002c/fxas21002c.cpp

@@ -734,9 +734,6 @@ FXAS21002C::ioctl(struct file *filp, int cmd, unsigned long arg)
 		reset();
 		return OK;
 
-	case GYROIOCSSAMPLERATE:
-		return set_samplerate(arg);
-
 	case GYROIOCSSCALE:
 		/* copy scale in */
 		memcpy(&_gyro_scale, (struct gyro_calibration_s *) arg, sizeof(_gyro_scale));

src/drivers/imu/l3gd20/l3gd20.cpp

@@ -658,9 +658,6 @@ L3GD20::ioctl(struct file *filp, int cmd, unsigned long arg)
 		reset();
 		return OK;
 
-	case GYROIOCSSAMPLERATE:
-		return set_samplerate(arg);
-
 	case GYROIOCSSCALE:
 		/* copy scale in */
 		memcpy(&_gyro_scale, (struct gyro_calibration_s *) arg, sizeof(_gyro_scale));

src/drivers/imu/mpu6000/mpu6000.cpp

@@ -1409,10 +1409,6 @@ MPU6000::gyro_ioctl(struct file *filp, int cmd, unsigned long arg)
 			return OK;
 		}
 
-	case GYROIOCSSAMPLERATE:
-		_set_sample_rate(arg);
-		return OK;
-
 	case GYROIOCSSCALE:
 		/* copy scale in */
 		memcpy(&_gyro_scale, (struct gyro_calibration_s *) arg, sizeof(_gyro_scale));

src/drivers/imu/mpu9250/mpu9250.cpp

@@ -875,10 +875,6 @@ MPU9250::gyro_ioctl(struct file *filp, int cmd, unsigned long arg)
 			return OK;
 		}
 
-	case GYROIOCSSAMPLERATE:
-		_set_sample_rate(arg);
-		return OK;
-
 	case GYROIOCSSCALE:
 		/* copy scale in */
 		memcpy(&_gyro_scale, (struct gyro_calibration_s *) arg, sizeof(_gyro_scale));