Update webgpu_instance_points.html

Clean up.

examples/webgpu_instance_points.html

@@ -38,7 +38,6 @@
 			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
 
 			import InstancedPoints from 'three/addons/objects/InstancedPoints.js';
-			//import InstancedPointsNodeMaterial from 'three/addons/materials/InstancedPointsNodeMaterial.js'; // why not this, instead?
 			import InstancedPointsGeometry from 'three/addons/geometries/InstancedPointsGeometry.js';
 
 			import { color, InstancedPointsNodeMaterial } from 'three/nodes';