Conpherence - remove resize handle since it doesn't work

Summary: Ref T3125. This isn't a fix but it at least doesn't keep the resize handle that doesn't work around

Test Plan: loaded up conpherence, saw no resize handle

Reviewers: epriestley, chad

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T3125

Differential Revision: https://secure.phabricator.com/D5861