Apply PendingAnimation#mDuration to all added anims

Doing this at the root instead of individually for all added
animators ensures none fall through the cracks.

Fixes: shelf moving too quickly in 2 button mode
Change-Id: I0de1ba9cee3fb8f1d6161371625d97e4b2305129

src/com/android/launcher3/Workspace.java

@@ -1342,7 +1342,6 @@ public class Workspace extends PagedView<WorkspacePageIndicator>
 
         ValueAnimator stepAnimator = ValueAnimator.ofFloat(0, 1);
         stepAnimator.addUpdateListener(listener);
-        stepAnimator.setDuration(config.duration);
         stepAnimator.addListener(listener);
         animation.add(stepAnimator);
     }