staging: wilc1000: remove braces {} for single statement blocks

This patch removes the warnings reported by checkpatch.pl on
braces {} not necessary for the single statement blocks.

Signed-off-by: Kim, Leo <leo.kim@atmel.com>
Signed-off-by: Tony Cho <tony.cho@atmel.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>