Remove unused security_state_ui code

This file is not used.

Change-Id: I3af311f62ebb44e9821bf4e98df72a712138eb25
Reviewed-on: https://chromium-review.googlesource.com/c/1491036
Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Emily Stark <estark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636515}
4 files changed