staging: rtl8723bs: remove unused rtw_set_802_11_bssid() function

remove rtw_set_802_11_bssid() function left unused
after wext routines removal.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/b3d1756b6ae4be7ca4fc50e12bd7e10587a6020c.1629727333.git.fabioaiuto83@gmail.com


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