Examples: Clean up. (#27531)

examples/webgpu_instance_uniform.html

@@ -25,7 +25,7 @@
 		<script type="module">
 
 			import * as THREE from 'three';
-			import { MeshStandardNodeMaterial, NodeUpdateType, Node, nodeObject, uniform, attribute, cubeTexture } from 'three/nodes';
+			import { MeshStandardNodeMaterial, NodeUpdateType, Node, nodeObject, uniform, cubeTexture } from 'three/nodes';
 
 			import WebGPU from 'three/addons/capabilities/WebGPU.js';
 			import WebGL from 'three/addons/capabilities/WebGL.js';