Update webgpu_materials.html

examples/webgpu_materials.html

@@ -370,7 +370,7 @@
 
 				//
 
-				setTimeout( () => testSerialization( serializeMesh ), 1000 ); // FIXME, see #28933
+				setTimeout( () => testSerialization( serializeMesh ), 1000 );
 
 			}