R1:b3557796fe65

Remove product literal strings in "pht()", part 6

Summary: Ref T13658.

Test Plan:
This test plan is non-exhaustive.

- Ran `bin/mail`.
- Uninstalled and reinstalled an application.

Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam

Maniphest Tasks: T13658

Differential Revision: https://secure.phabricator.com/D21770