Remove some dead Phortune code

Summary: Ref T2787. This stuff is now irrelevant and/or has no callsites.

Test Plan: `grep`, poked around

Reviewers: chad, btrahan

Reviewed By: chad, btrahan

Subscribers: epriestley

Maniphest Tasks: T2787

Differential Revision: https://secure.phabricator.com/D10684