Minor tidying of Aphlict code

Summary: Just some housekeeping... mostly just removing some unused variables.

Test Plan: Checked that I was still about to receive notifications from /notification/status/.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11398