Smart Lock: Remove unused service observer methods.

R=hansberry@chromium.org

Bug: 899324
Test: none
Change-Id: Ic0e717072a242ab397aad86a5ce651d4ea7de970
Reviewed-on: https://chromium-review.googlesource.com/c/1315488
Reviewed-by: Ryan Hansberry <hansberry@chromium.org>
Commit-Queue: James Hawkins <jhawkins@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605018}
2 files changed