staging: vt6655: remove braces for single statement blocks

This patch removes braces for single statement blocks, clearing these
types of checkpatch.pl warnings:

WARNING: braces {} are not necessary for single statement blocks
WARNING: braces {} are not necessary for any arm of this statement

Signed-off-by: Teodora Baluta <teobaluta@gmail.com>
Reviewed-by: Lisa Nguyen <lisa@xenapiadmin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>