iio: cros_ec: Remove unused variable

Fix gcc warning:
cros_ec_baro.c:130:25: warning: variable ‘ec_device’ set but not used
Signed-off-by: Paolo Cretaro <paolocretaro@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/pressure/cros_ec_baro.c

@@ -126,7 +126,6 @@ static int cros_ec_baro_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct cros_ec_dev *ec_dev = dev_get_drvdata(dev->parent);
-	struct cros_ec_device *ec_device;
 	struct iio_dev *indio_dev;
 	struct cros_ec_baro_state *state;
 	struct iio_chan_spec *channel;
@@ -136,7 +135,6 @@ static int cros_ec_baro_probe(struct platform_device *pdev)
 		dev_warn(dev, "No CROS EC device found.\n");
 		return -EINVAL;
 	}
-	ec_device = ec_dev->ec_dev;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*state));
 	if (!indio_dev)