staging: rtl8723bs: remove unnecessary braces in rtl8723b_cmd

Remove braces that are not necessary for single statement blocks
to fix checkpatch warnings.

Signed-off-by: Ignacio Pena <ignacio.pena87@gmail.com>
Link: https://lore.kernel.org/r/20250716175113.81519-1-ignacio.pena87@gmail.com


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