Remove a TODO comment

Summary: Ref T6852. Apparently, this is not a TODO.

Test Plan: N/A

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: chad, Korvin, epriestley

Maniphest Tasks: T6852

Differential Revision: https://secure.phabricator.com/D11165