Examples: Clean up. (#30331)

examples/webgpu_postprocessing_traa.html

@@ -38,7 +38,7 @@
 
 			function init() {
 
-				renderer = new THREE.WebGPURenderer( { forceWebGL: true } );
+				renderer = new THREE.WebGPURenderer();
 				renderer.setPixelRatio( window.devicePixelRatio );
 				renderer.setSize( window.innerWidth, window.innerHeight );
 				renderer.setAnimationLoop( animate );