Remove CSS list-style

sky/engine/core/animation/css/CSSAnimatableValueFactory.cpp

Index: sky/engine/core/animation/css/CSSAnimatableValueFactory.cpp
diff --git a/sky/engine/core/animation/css/CSSAnimatableValueFactory.cpp b/sky/engine/core/animation/css/CSSAnimatableValueFactory.cpp
index 1c649cdca687a01f423330411a6b64c08ebfa41b..8ca30adacb7f7e72feb7f7f09544b41b98efb786 100644
--- a/sky/engine/core/animation/css/CSSAnimatableValueFactory.cpp
+++ b/sky/engine/core/animation/css/CSSAnimatableValueFactory.cpp
@@ -326,8 +326,6 @@ PassRefPtr<AnimatableValue> CSSAnimatableValueFactory::create(CSSPropertyID prop
         return createFromFontWeight(style.fontWeight());
     case CSSPropertyHeight:
         return createFromLength(style.height(), style);
-    case CSSPropertyListStyleImage:
-        return createFromStyleImage(style.listStyleImage());
     case CSSPropertyLeft:
         return createFromLength(style.left(), style);
     case CSSPropertyLetterSpacing: