chore: remove missing screen routes

app/lib/routes.dart

@@ -1,13 +1,10 @@
 // ignore_for_file: avoid_classes_with_only_static_members
 import 'package:flutter/material.dart';
-import 'package:studyu_app/models/app_error.dart';
 import 'package:studyu_app/screens/app_onboarding/about.dart';
 import 'package:studyu_app/screens/app_onboarding/app_outdated_screen.dart';
 import 'package:studyu_app/screens/app_onboarding/loading_screen.dart';
 import 'package:studyu_app/screens/app_onboarding/terms.dart';
 import 'package:studyu_app/screens/app_onboarding/welcome.dart';
-import 'package:studyu_app/screens/error/error_screen.dart';
-import 'package:studyu_app/screens/error/troubleshoot.dart';
 import 'package:studyu_app/screens/study/dashboard/contact_tab/contact_screen.dart';
 import 'package:studyu_app/screens/study/dashboard/contact_tab/faq.dart';
 import 'package:studyu_app/screens/study/dashboard/dashboard.dart';
@@ -41,8 +38,6 @@ class Routes {
   static const String reportHistory = '/reportHistory';
   static const String reportDetails = '/reportDetails';
   static const String performanceDetails = '/performanceDetails';
-  static const String troubleshooting = '/troubleshooting';
-  static const String error = '/error';
 
   static Route<dynamic> unknownRoute(RouteSettings settings) {
     return MaterialPageRoute(
@@ -152,18 +147,6 @@ class Routes {
           builder: (_) => const ReportHistoryScreen(),
           settings: settings,
         );
-      case troubleshooting:
-        return MaterialPageRoute(
-          builder: (_) => TroubleshootScreen(),
-          settings: settings,
-        );
-      case error:
-        return MaterialPageRoute(
-          builder: (_) => ErrorScreen(
-            error: AppError(AppErrorTypes.network, 'An error occurred'),
-          ),
-          settings: settings,
-        );
       default:
         //final potentialSessionString = Uri.decodeComponent(settings.name.replaceFirst('/', ''));
         //return MaterialPageRoute(builder: (_) => LoadingScreen(sessionString: potentialSessionString));