Remove clearreferenceinfo

Author: arcadiogarcia

Microsoft.Toolkit.Uwp.UI.Animations/Expressions/CompositionExtensions.cs

@@ -176,7 +176,6 @@ public static void StartAnimation(this CompositionObject compObject, string prop
         /// <param name="easing">The easing function to use when interpolating between frames.</param>
         public static void InsertExpressionKeyFrame(this KeyFrameAnimation keyframeAnimation, float normalizedProgressKey, ExpressionNode expressionNode, CompositionEasingFunction easing = null)
         {
-            expressionNode.ClearReferenceInfo();
             keyframeAnimation.InsertExpressionKeyFrame(normalizedProgressKey, expressionNode.ToExpressionString(), easing);
 
             expressionNode.SetAllParameters(keyframeAnimation);
@@ -253,7 +252,6 @@ private static ExpressionAnimation CreateExpressionAnimationFromNode(Compositor
             // Only create a new animation if this node hasn't already generated one before, so we don't have to re-parse the expression string.
             if (expressionNode.ExpressionAnimation == null)
             {
-                expressionNode.ClearReferenceInfo();
                 expressionNode.ExpressionAnimation = compositor.CreateExpressionAnimation(expressionNode.ToExpressionString());
             }
 

Microsoft.Toolkit.Uwp.UI.Animations/Expressions/ExpressionNodes/ExpressionNode.cs

@@ -260,20 +260,6 @@ internal string ToExpressionString()
             return ToExpressionStringInternal();
         }
 
-        /// <summary>
-        /// Clears the reference information.
-        /// </summary>
-        /// <exception cref="System.Exception">Reference and paramName can't both be null</exception>
-        internal void ClearReferenceInfo()
-        {
-            _objRefList = null;
-            ParamName = null;
-            foreach (var child in Children)
-            {
-               child.ClearReferenceInfo();
-            }
-        }
-
         /// <summary>
         /// Ensures the reference information.
         /// </summary>