staging: r8188eu: remove write-only fields from struct hal_data_8188e

The fields MultiFunc and RegulatorMode of struct hal_data_8188e are
set but never used, remove them.

Acked-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210915090156.4169-3-straube.linux@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>