Remove some unused methods on LoFiDecider.

Bug: 721403
Change-Id: I56ab262ba7349e6261816e99fe01fe1d39e0e79a
Reviewed-on: https://chromium-review.googlesource.com/1237252
Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Commit-Queue: Eric Roman <eroman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593014}
5 files changed