Fix scene node declaration.

game/scene.py

@@ -24,14 +24,7 @@ class Node:
             subnode.draw(time)
 
 class SceneNode(Node):
-    __slots__ = '_subnodes'
+    pass
-
-    def __init__(self, *subnodes):
-        Node.__init__(self, *subnodes)
-        self._subnodes = subnodes
-
-    def draw(self, time):
-        Node.draw(self, time)
 
 class TextureNode(Node):
     __slots__ = '_textures'