Don't attempt to slow down CASpringAnimation animations when slow-motion animations is enabled.
Don't attempt to slow down CASpringAnimation animations when slow-motion animations is enabled.

Summary: CASpringAnimation can't be slowed down by modifying its duration.

Reviewers: O2 Material Motion, O4 Material Apple platform reviewers, #material_motion, appsforartists

Reviewed By: O2 Material Motion, #material_motion, appsforartists

Subscribers: markwei

Tags: #material_motion

Differential Revision: http://codereview.cc/D3224

material-motion/material-motion-swift,material-motion/material-motion-swift