Remove another 0.14 changelog entry for 15 RC1 release notes

_posts/2016-03-07-react-v15-rc1.md

@@ -90,6 +90,5 @@ Each of these changes will continue to work as before with a new warning until t
 - Input events are handled more reliably in IE 10 and IE 11; spurious events no longer fire when using a placeholder.
 - React DOM now supports the `cite` and `profile` HTML attributes.
 - React DOM now supports the `onAnimationStart`, `onAnimationEnd`, `onAnimationIteration`, `onTransitionEnd`, and `onInvalid` events. Support for `onLoad` has been added to `object` elements.
-- Add-Ons: ReactTransitionGroup now correctly handles multiple nodes being removed simultaneously.
 - `Object.is` is used in a number of places to compare values, which leads to fewer false positives, especially involving `NaN`. In particular, this affects the `shallowCompare` add-on.
 - React DOM now defaults to using DOM attributes instead of properties, which fixes a few edge case bugs. Additionally the nullification of values (ex: `href={null}`) now results in the forceful removal, no longer trying to set to the default value used by browsers in the absence of a value.