staging: rtl8723bs: remove more unnecessary parentheses

remove more unnecessary parentheses after
DBG_8192C deletion.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/c730d2719cb2ed385dd55811d6e205c6c31f2355.1618064275.git.fabioaiuto83@gmail.com


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