DO NOT MERGE - Disable warning on blocking one-way call from autofill server.

This behavior existed since autofill was introduced on O and it won't be fixed
on P, so there's no point on warning. In fact, the warning is often a red
herring for other issues, not to mention a big logcat spammer.

Bug: 35708678
Test: manual verification looking at logcat

Change-Id: I40be4ce25abc5b097ea67e5cb34bb9c4237f0826