removed setDrawFuncs dependency from leaf node classes. It's handled in Shape now

src/shapes/Ellipse.js

@@ -23,7 +23,6 @@
             // call super constructor
             Kinetic.Shape.call(this, config);
             this.className = ELLIPSE;
-            this._setDrawFuncs();
         },
         drawFunc: function(canvas) {
             var context = canvas.getContext(), r = this.getRadius();