staging: rtl8723bs: remove struct hal_ops

After previous patches, struct hal_ops is finally empty now. Remove
the structure and related initialization functions.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20250715182814.212708-12-straube.linux@gmail.com


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