staging: rtl8723bs: remove unused DbgPrint macro

remove unused DbgPrint macro definition.

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/00e9b407fa1a7c911295b2fec215d82f5da058f8.1619794331.git.fabioaiuto83@gmail.com


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