Fix analysis warrnings

lib/src/models/config/toolbar/toolbar_configurations.dart

@@ -1,6 +1,5 @@
 // ignore_for_file: public_member_api_docs, sort_constructors_first
-import 'package:flutter/widgets.dart'
+import 'package:flutter/widgets.dart' show Widget, immutable;
-    show Axis, Widget, WrapAlignment, WrapCrossAlignment, immutable;
 
 import '../../../widgets/toolbar/base_toolbar.dart';
 import 'toolbar_shared_configurations.dart';

lib/src/widgets/toolbar/simple_toolbar.dart

@@ -1,7 +1,5 @@
 import 'package:flutter/material.dart';
 
-import '../../extensions/quill_configurations_ext.dart';
-import '../../l10n/extensions/localizations.dart';
 import '../../models/config/toolbar/toolbar_configurations.dart';
 import '../../models/documents/attribute.dart';
 import '../utils/provider.dart';