staging: rtl8723bs: Remove unnecessary braces

Remove braces that are not necessary for any arm of this statement.
Issue found by checkpatch.

Signed-off-by: Javier F. Arias <jarias.linux@gmail.com>
Link: https://lore.kernel.org/r/20191006230327.GA4168@gmail.com


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