Set scene.matrixAutoUpdate = false in performance_static example

Author: takahirox

examples/webgl_performance_static.html

@@ -46,6 +46,7 @@
 
 				scene = new THREE.Scene();
 				scene.background = new THREE.Color( 0xffffff );
+				scene.matrixAutoUpdate = false;
 
 				var material = new THREE.MeshNormalMaterial();