Merge pull request #11442 from mrdoob/Mugen87-patch-1

Update Useful-links.html

docs/manual/introduction/Useful-links.html

@@ -73,14 +73,6 @@
 
 		</ul>
 
-
-		<h2>More documentation</h2>
-		<ul>
-			<li>
-				[link:http://ushiroad.com/3j/ Three.js walking map] - a graphical breakdown of the structure of a three.js scene.
-			</li>
-		</ul>
-
 		<h2>News and Updates</h2>
 		<ul>
 			<li>