Allow structured destruction of Differential Revisions

Summary:
Ref T4749. Ref T3265. Ref T4909.

  - Remove old "destroy revision" script.
  - Move to structured `bin/remove` destruction.
  - Fix some edge issues.
  - Add transaction destruction support.

Test Plan:
  - Destroyed a bunch of revisions.
  - Saw diffs, changesets, hunks, transactions, edges, and inlines also get wiped out.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T4749, T4909, T3265

Differential Revision: https://secure.phabricator.com/D8943