iio: accel: bmi088: remove unused struct 'bmi088_scale_info'

'bmi088_scale_info' has been unused since the original
commit c19ae6be ("iio: accel: Add support for the Bosch-Sensortec
BMI088").

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20240522230457.478156-2-linux@treblig.org


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>