iio:triggered-buffer: Remove redundant call to iio_sw_buffer_preenable().

The equivalent of iio_sw_buffer_preenable() is now done in the IIO buffer core,
so there is no need to do this from the driver anymore.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/industrialio-triggered-buffer.c

@@ -17,7 +17,6 @@
 #include <linux/iio/trigger_consumer.h>
 
 static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = {
-	.preenable = &iio_sw_buffer_preenable,
 	.postenable = &iio_triggered_buffer_postenable,
 	.predisable = &iio_triggered_buffer_predisable,
 };