staging: rtl8723bs: remove BT debug code

remove BT dead debug code, probably it was intended
for a specific command line interface.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/20210728141858.13024-1-fabioaiuto83@gmail.com


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