R1:d3452967e043

Remove phame.skins config option

Summary: Removes an unneeded config. Ref T9897

Test Plan: New Blog, View Blog live.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T9897

Differential Revision: https://secure.phabricator.com/D14714