iio:frequency: drop assign iio_info.driver_module

The equivalent is now done via macro magic when
the relevant register call is made.  The actual structure
element will shortly go away.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>

drivers/iio/frequency/ad9523.c

@@ -738,7 +738,6 @@ static const struct iio_info ad9523_info = {
 	.write_raw = &ad9523_write_raw,
 	.debugfs_reg_access = &ad9523_reg_access,
 	.attrs = &ad9523_attribute_group,
-	.driver_module = THIS_MODULE,
 };
 
 static int ad9523_setup(struct iio_dev *indio_dev)

drivers/iio/frequency/adf4350.c

@@ -374,7 +374,6 @@ static const struct iio_chan_spec adf4350_chan = {
 
 static const struct iio_info adf4350_info = {
 	.debugfs_reg_access = &adf4350_reg_access,
-	.driver_module = THIS_MODULE,
 };
 
 #ifdef CONFIG_OF