Fixed grass example.

examples/webgl_materials_grass.html

@@ -65,7 +65,6 @@
 				scene.children.reverse();
 
 				renderer = new THREE.WebGLRenderer();
-				renderer.sortObjects = false;
 				renderer.setClearColor( 0x003300 );
 				renderer.setPixelRatio( window.devicePixelRatio );
 				renderer.setSize( window.innerWidth, window.innerHeight );