Remove Shape:destroy().

With the changes to Shapes rendering them mere blocks of information with no role in the World save being attached to Bodies and discarded, Shape:destroy no longer has any justification for its continued existence. Truly, on several levels, it has been hoist with its own petard.

src/modules/physics/box2d/wrap_ChainShape.cpp

@@ -114,7 +114,6 @@ namespace box2d
 		{ "rayCast", w_Shape_rayCast },
 		{ "computeAABB", w_Shape_computeAABB },
 		{ "computeMass", w_Shape_computeMass },
-		{ "destroy", w_Shape_destroy },
 		{ 0, 0 }
 	};