[autotest] Disable sysinfo for power_CheckAfterSuspend

This test is generating over 500M logs.

BUG=chromium:534689
TEST=None

Change-Id: I166b8394210a2c966e2dea95cb386d2f18f53943
Reviewed-on: https://chromium-review.googlesource.com/301335
Commit-Ready: Fang Deng <fdeng@chromium.org>
Tested-by: Fang Deng <fdeng@chromium.org>
Reviewed-by: Mungyung Ryu <mkryu@google.com>
1 file changed