CSS Transitions: Remove zero-duration-with-non-zero-delay-end.html

This test exposes implementation details which would otherwise only be used for
testing purposes.

NOTRY=true

Review URL: https://codereview.chromium.org/40263007

git-svn-id: svn://svn.chromium.org/blink/trunk@160500 bbb929c8-8fbe-4397-9dbb-9b2b20218538