Remove empty implementations of describeAutomaticCapabilities()
Summary:
This has been replaced by PolicyCodex after D16830. Also:
- Rebuild Celerity map to fix grumpy unit test.
- Fix one issue on the policy exception workflow to accommodate the new code.
Test Plan:
- arc unit --everything
- Viewed policy explanations.
- Viewed policy errors.
Reviewers: chad
Reviewed By: chad
Subscribers: hach-que, PHID-OPKG-gm6ozazyms6q6i22gyam
Differential Revision: https://secure.phabricator.com/D16831