Remove support for custom logos
Summary:
- These don't fit anywhere in the new design.
- Even if we figure out how to fit them in, 220px logos definitely won't fit on the 320px iPhone screen so anyone who has a custom logo will have to rework them anyway.
- Kill it for now, and once we get the new design in and working maybe we can restore it somehow.
Test Plan: Loaded local install, no logo. Grepped for config.
Reviewers: btrahan, vrana
Reviewed By: vrana
CC: aran
Maniphest Tasks: T1569
Differential Revision: https://secure.phabricator.com/D3101