Examples: Clean up.

examples/webgl_tonemapping.html

@@ -31,7 +31,7 @@
 				opacity: 1.0,
 				roughness: 1.0,
 				bumpScale: 1.0,
-				exposure: 3.0,
+				exposure: 2.0,
 				whitePoint: 5.0,
 				toneMapping: "Uncharted2",
 				renderMode: "Renderer"
@@ -138,8 +138,6 @@
 
 						scene.environment = pmremGenerator.fromEquirectangular( hdrEquirect ).texture;
 
-						standardMaterial.needsUpdate = true; // TODO(mrdoob) Should WebGLRenderer handle this?
-
 						hdrEquirect.dispose();
 						pmremGenerator.dispose();