staging: r8188eu: remove set_bwmode_handler from hal_ops

Remove set_bwmode_handler from hal_ops and remove its wrapper
rtw_hal_set_bwmode(). Call PHY_SetBWMode8188E() directly instead.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210906190223.11396-11-straube.linux@gmail.com


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