fix some lints

app/lib/core/providers/defaults.dart

@@ -18,7 +18,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 import 'package:flutter/material.dart';
-import 'package:riverpod/riverpod.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
 part 'defaults.g.dart';

app/lib/core/providers/router.dart

@@ -18,7 +18,6 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 import 'package:go_router/go_router.dart';
-import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 import 'package:weblibre/core/routing/routes.dart';
 import 'package:weblibre/features/user/domain/repositories/onboarding.dart';