R1:c621da8e972f

Delete maniphest.enabled and phriction.enabled

Summary: @edward, you would need to delete these options from FB config to avoid setup warning.

Test Plan: /T1

Reviewers: epriestley, edward

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5620