Remove the onboard "mailKey" from Pholio Mocks


Remove the onboard "mailKey" from Pholio Mocks

Summary: Depends on D19921. Ref T11351. Ref T13065. Update Pholio to use the shared mail infrastructure. See D19670 for a previous change in this vein.

Test Plan: Ran upgrade, spot-checked that everything made it into the new table alive.

Reviewers: amckinley

Reviewed By: amckinley

Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam

Maniphest Tasks: T13065, T11351

Differential Revision: https://secure.phabricator.com/D19922