staging: wilc1000: remove warnings on unnecessary braces

This patch removes the warnings reported by checkpatch.pl on the braces
{} not necessary for any arm of this statement.

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>