GitLab

- Remove code that shows connected Drive apps in launcher;
- Update AppListSyncableService to remove sync data for those apps;

Bug: 794724
Change-Id: I4e16df1d1e7dc216114174eae21cfac1b0eec189
Reviewed-on: https://chromium-review.googlesource.com/828026Reviewed-by: Toni Barzic <tbarzic@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Yury Khmel <khmel@chromium.org>
Commit-Queue: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524468}