staging: rtl8723bs: remove more empty if blocks after DBG_8192C deletion

remove more empty if-blocks after DBG_8192C deletion.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/99b111d2bac822b9dc7ff6e1cfd3d3efc62ef836.1618064275.git.fabioaiuto83@gmail.com


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