fix test

test/how_to_play/how_to_play_dialog_test.dart

@@ -3,13 +3,10 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:mocktail/mocktail.dart';
 import 'package:pinball/how_to_play/how_to_play.dart';
 import 'package:pinball/l10n/l10n.dart';
-import 'package:pinball_audio/pinball_audio.dart';
 import 'package:platform_helper/platform_helper.dart';
 
 import '../helpers/helpers.dart';
 
-class _MockPinballPlayer extends Mock implements PinballPlayer {}
-
 class _MockPlatformHelper extends Mock implements PlatformHelper {}
 
 void main() {
@@ -112,30 +109,5 @@ void main() {
       await tester.pumpAndSettle();
       expect(find.byType(HowToPlayDialog), findsNothing);
     });
-
-    testWidgets(
-      'plays the I/O Pinball voice over audio on dismiss',
-      (tester) async {
-        final player = _MockPinballPlayer();
-        await tester.pumpApp(
-          Builder(
-            builder: (context) {
-              return TextButton(
-                onPressed: () => HowToPlayDialog(onDismissCallback: () {}),
-                child: const Text('test'),
-              );
-            },
-          ),
-          pinballPlayer: player,
-        );
-        expect(find.byType(HowToPlayDialog), findsNothing);
-        await tester.tap(find.text('test'));
-        await tester.pumpAndSettle();
-
-        await tester.tapAt(Offset.zero);
-        await tester.pumpAndSettle();
-        verify(() => player.play(PinballAudio.ioPinballVoiceOver)).called(1);
-      },
-    );
   });
 }