Remove is: argument from onRecognitionState.
Remove is: argument from onRecognitionState.

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

Reviewed By: markwei, O2 Material Motion, O4 Material Apple platform reviewers, #material_motion

Subscribers: markwei

Tags: #material_motion

Differential Revision: http://codereview.cc/D2257

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