staging: r8188eu: remove SetBeaconRelatedRegistersHandler from hal_ops

Remove SetBeaconRelatedRegistersHandler from hal_ops and remove its
wrapper rtw_hal_bcn_related_reg_setting().
Call SetBeaconRelatedRegisters8188EUsb() directly instead.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210906190223.11396-40-straube.linux@gmail.com


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