Allow structured destruction of Differential Revisions
- Remove old "destroy revision" script.
- Move to structured bin/remove destruction.
- Fix some edge issues.
- Add transaction destruction support.
- Destroyed a bunch of revisions.
- Saw diffs, changesets, hunks, transactions, edges, and inlines also get wiped out.
Reviewed By: btrahan
Differential Revision: https://secure.phabricator.com/D8943