Remove more testRunner.display() calls from LayoutTests

These tests should continue to run correctly without rebaselines.

BUG=345027

Review URL: https://codereview.chromium.org/183703003

git-svn-id: svn://svn.chromium.org/blink/trunk@168232 bbb929c8-8fbe-4397-9dbb-9b2b20218538