staging: rtl8723bs: remove code block guarded by undefined SDIO_DEBUG_IO

remove code block guarded by SDIO_DEBUG_IO symbol.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/ee77c4b4e6fbba8e0182e9558f793c88cf398cb5.1618064274.git.fabioaiuto83@gmail.com


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