Remove hacky route injection in favour of new search page implementation

Targets the realtime compiler v4 as it's a breaking change that requires Hyde v2. See #1498

packages/realtime-compiler/src/Routing/PageRouter.php

@@ -90,13 +90,6 @@ public static function handle(Request $request): Response
 
     protected function getPageFromRoute(): HydePage
     {
-        /** @deprecated Can be removed by https://github.com/hydephp/develop/pull/1498 */
-        if (unslash($this->request->path) === DocumentationSearchPage::routeKey() && DocumentationSearchPage::enabled()) {
-            // Since this page is not present within the search index (as it's normally generated by a build task)
-            // we instantiate and return it here.
-            return new DocumentationSearchPage();
-        }
-
         return Routes::getOrFail($this->normalizePath($this->request->path))->getPage();
     }
 }