Don't call writeLogLog. Just writeLog will do.

Test Plan: Ran arc lint locally. Now it doesn't exit with an error.

Reviewers: Blessed Reviewers, Arcanist, epriestley

Reviewed By: Blessed Reviewers, Arcanist, epriestley

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9028