Updated changelog

Author: mjsalinger

CHANGELOG.md

@@ -6,7 +6,6 @@
 * new: Added revoke-handler to revoke access token
 * new: Added implicit grant flow
 * new: Switch from jshint to eslint
-* fix: correct client ID check in refresh_token grant type
 
 ### 3.1.0
 * new: Added package-lock.json