staging: iio: remove odd structure definition.

I've no idea where this came from!
Also fixed form -> from in comment

Signed-off-by: Jonathan Cameron <[e-mail]>
Acked-by: Manuel Stahl <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/iio/trigger.h

···
 
 void iio_free_trigger(struct iio_trigger *trig);
 
-
-struct iio_simple_trigger {
-	struct iio_trigger trig;
-};
 #endif /* _IIO_TRIGGER_H_ */