iio: remove indio_dev pointer from max517_data

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Roland Stigge <stigge@antcom.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/iio/dac/max517.c

@@ -43,7 +43,6 @@ enum max517_device_ids {
 };
 
 struct max517_data {
-	struct iio_dev		*indio_dev;
 	struct i2c_client	*client;
 	unsigned short		vref_mv[2];
 };