R1:ef731b42b78a

Turn lint TODO comments back on

Summary:
These were accidentally disabled here:

https://secure.phabricator.com/diffusion/P/change/master/.arclint;36e2d02d6ec5db26f4dfc813a4f02238d18cc8a5

Test Plan: iiam

Reviewers: joshuaspence

Reviewed By: joshuaspence

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D13029