Remove remainder of url updater

Including removing from the main nav

README.md

@@ -114,7 +114,7 @@ If your change does appear then the old result may be cached by our CDN. You'll
 
 ### Documentation Cache Purge
 
-All documentation pages e.g. `/v2`, `/v2/api`, `/v2/migration`, `/v3/`, `/v3/api`, `/url-updater`:
+All documentation pages e.g. `/v2`, `/v2/api`, `/v2/migration`, `/v3/`, `/v3/api`:
 - origami-build-service-website
 
 ### V3 API Cache Purge

data/navigation.json

@@ -5,11 +5,6 @@
 			"href": "v2",
 			"current": false
 		},
-		{
-			"name": "URL Updater",
-			"href": "url-updater",
-			"current": false
-		},
 		{
 			"name": "API Reference",
 			"href": "v3/docs/api",

views/migration.html

@@ -9,8 +9,6 @@ <h1 id="migration-guide">
 
     <h2 id="v2-to-v3-migration">Migrating from v2 to v3</h2>
 
-    <p>Use the <a href="/__origami/service/build/url-updater">URL updater</a> to help guide you through the migration from v2 to v3.</p>
-
     <h3 id="v2-to-v3-migration-update-query-parameters">Update global query parameters</h3>
 
     <p>Version 3 introduces new query parameters, and requires others which were previously optional (see the <a href="/__origami/service/build/v3/docs/api">v3 API docs<a/> for more details):</p>