staging: rtl8723bs: remove leftover code for other chips

Clean up unreferenced definitions in hal headers and code.

Signed-off-by: Artur Bujdoso <artur.bujdoso@gmail.com>
Link: https://lore.kernel.org/r/YmD/I19v8sJLrOQo@crux


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