Do not call MarkForUpdate() in AnimatedSprite2D, as Drawable2D's are not added to the octree.

Source/Urho3D/Urho2D/AnimatedSprite2D.cpp

@@ -465,8 +465,6 @@ void AnimatedSprite2D::UpdateAnimation(float timeStep)
             }
         }
     }
-
-    MarkForUpdate();
 }
 
 void AnimatedSprite2D::CalculateTimelineWorldTransform(unsigned index)