Remove unused code

design_patterns/lib/list_detail/list_detail.dart

@@ -85,7 +85,7 @@ class ListPane extends StatelessWidget {
               ? null
               : BoxDecoration(
                   border: Border.all(
-                  color: Theme.of(context).accentColor,
+                  color: Theme.of(context).colorScheme.secondary,
                   width: 4,
                   style: BorderStyle.solid,
                 )),
@@ -99,7 +99,6 @@ class ListPane extends StatelessWidget {
             ),
           ),
         );
-        return Image.asset(images[index]);
       },
       itemCount: images.length,
     );
@@ -185,7 +184,7 @@ class SingleScreenExclusiveRoute<T> extends MaterialPageRoute<T> {
 
   @override
   Widget buildContent(BuildContext context) {
-    if (MediaQuery.of(context).hinge?.bounds?.top == 0.0) {
+    if (MediaQuery.of(context).hinge?.bounds.top == 0.0) {
       navigator?.removeRoute(this);
     }
     return super.buildContent(context);

design_patterns/test/widget_test.dart

@@ -1,30 +0,0 @@
-// This is a basic Flutter widget test.
-//
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility that Flutter provides. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-
-import 'package:design_patterns/main.dart';
-
-void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
-
-    // Verify that our counter starts at 0.
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
-
-    // Tap the '+' icon and trigger a frame.
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
-
-    // Verify that our counter has incremented.
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
-  });
-}