iio:dac:mcp4725 drop specification of scan type as unused in this driver.

IIO_ST is going away as it is a pain to maintain so the simplest path with
this driver is to not specify the unused scan type.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c
index 9f57ae8..7d9f5c3 100644
--- a/drivers/iio/dac/mcp4725.c
+++ b/drivers/iio/dac/mcp4725.c
@@ -209,7 +209,6 @@
 	.channel	= 0,
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
 	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
-	.scan_type	= IIO_ST('u', 12, 16, 0),
 	.ext_info	= mcp4725_ext_info,
 };