staging: wlags49_h2: Delete unnecessary braces

Fix the following checkpatch.pl warnings in wl_netdev.c:
WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Jelena Bjelja <jelena.bjelja.ing@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>