users_private_apitest cleanup.

Don't need OS_CHROMEOS since this is only built on chromeos.

Bug: 777356
Test: this is the test.
Change-Id: I3088890e2ff8e5d11da1a487517c68c8e1eec720
Reviewed-on: https://chromium-review.googlesource.com/1144438
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Achuith Bhandarkar <achuith@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578325}
1 file changed