refactor: removed themecubit

lib/leaderboard/view/leaderboard_page.dart

@@ -1,7 +1,6 @@
 // ignore_for_file: public_member_api_docs
 
 import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:leaderboard_repository/leaderboard_repository.dart';
 import 'package:pinball/l10n/l10n.dart';
 import 'package:pinball/theme/theme.dart';
@@ -25,10 +24,7 @@ class LeaderboardPage extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return BlocProvider(
-      create: (context) => ThemeCubit()..characterSelected(theme),
-      child: LeaderboardView(theme: theme),
-    );
+    return LeaderboardView(theme: theme);
   }
 }