staging: rtl8723bs: remove unused _rtw_init_queue() function

remove _rtw_init_queue() left unused by previous commit
in this series.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/3c03fcfbe799195c84608b05fc54efe921bef4de.1630307025.git.fabioaiuto83@gmail.com


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