Examples: Cleanup `webgpu_lights_tiled` (#29701)

examples/webgpu_lights_tiled.html

@@ -147,7 +147,6 @@
 				renderer.setAnimationLoop( animate );
 				renderer.toneMapping = THREE.NeutralToneMapping;
 				renderer.toneMappingExposure = 5;
-				renderer.lighting = lighting; // set lighting
 				document.body.appendChild( renderer.domElement );
 
 				// controls