chore(files): Remove unused navigation manager

Signed-off-by: provokateurin <kate@provokateurin.de>

Author: provokateurin

apps/files/lib/App.php

@@ -21,29 +21,6 @@
 use Psr\Log\LoggerInterface;
 
 class App {
-	private static ?INavigationManager $navigationManager = null;
-
-	/**
-	 * Returns the app's navigation manager
-	 */
-	public static function getNavigationManager(): INavigationManager {
-		// TODO: move this into a service in the Application class
-		if (self::$navigationManager === null) {
-			self::$navigationManager = new NavigationManager(
-				Server::get(IAppManager::class),
-				Server::get(IUrlGenerator::class),
-				Server::get(IFactory::class),
-				Server::get(IUserSession::class),
-				Server::get(IGroupManager::class),
-				Server::get(IConfig::class),
-				Server::get(LoggerInterface::class),
-				Server::get(IEventDispatcher::class),
-			);
-			self::$navigationManager->clear(false);
-		}
-		return self::$navigationManager;
-	}
-
 	public static function extendJsConfig($settings): void {
 		$appConfig = json_decode($settings['array']['oc_appconfig'], true);