CRAS: alsa_io_unittest - Remove uneccessary code

BUG=None
TEST=unittest

Change-Id: Ifb454ec2c54c2a3da3069ecef121c0055ff0d762
Reviewed-on: https://chromium-review.googlesource.com/429812
Commit-Ready: Hsinyu Chao <hychao@chromium.org>
Tested-by: Hsinyu Chao <hychao@chromium.org>
Reviewed-by: Chinyue Chen <chinyue@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
1 file changed