Update webgpu_postprocessing_ao.html

Remove unused argument.

examples/webgpu_postprocessing_ao.html

@@ -138,7 +138,7 @@
 				aoPass.resolutionScale = 0.5; // running AO in half resolution is often sufficient
 				aoPass.useTemporalFiltering = true;
 
-				const aoPassOutput = aoPass.getTextureNode( 'output' );
+				const aoPassOutput = aoPass.getTextureNode();
 
 				// scene context