Remove extraneous animation controller declaration (#428)

Author: xster

packages/scrollable_positioned_list/CHANGELOG.md

@@ -1,3 +1,6 @@
+# 0.3.5
+* Fix extraneous animation controller declaration in 0.3.4.
+
 # 0.3.4
 * Disposed the animation controller when disposing the scrollable list.
 

packages/scrollable_positioned_list/lib/src/scrollable_positioned_list.dart

@@ -492,8 +492,6 @@ class _ScrollablePositionedListState extends State<ScrollablePositionedList>
               AnimationController(vsync: this, duration: duration)..forward();
           opacity.parent = _opacityAnimation(opacityAnimationWeights)
               .animate(_animationController);
-          opacity.parent = _opacityAnimation(opacityAnimationWeights).animate(
-              AnimationController(vsync: this, duration: duration)..forward());
           secondary.scrollController.jumpTo(-direction *
               (_screenScrollCount *
                       primary.scrollController.position.viewportDimension -

packages/scrollable_positioned_list/pubspec.yaml

@@ -1,5 +1,5 @@
 name: scrollable_positioned_list
-version: 0.3.4
+version: 0.3.5
 description: >
   A list with helper methods to programmatically scroll to an item.
 homepage: https://github.com/google/flutter.widgets/tree/master/packages/scrollable_positioned_list