GitLab

Battery reporting via HFP is now consolidated into BlueZ, so there is no
need to listen to CRAS directly.

BUG=b:172361090,b:166543531

Change-Id: Id0f54323790a5788e09441a32a9a4be77a3d8bb8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2593821Reviewed-by: Ryan Hansberry <hansberry@chromium.org>
Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Sonny Sasaka <sonnysasaka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837358}