make the compiler happy

lib/pages/settings/account.dart

@@ -105,7 +105,7 @@ class ConversationButton extends StatelessWidget {
     return TextButton.icon(
         onPressed: () => showDialog(
               context: context,
-              builder: (context) => Chat(),
+              builder: (context) => const Chat(),
             ),
         icon: const Icon(Icons.chat),
         label: Text("chat".i18n()));

lib/pages/settings/settings.dart

@@ -47,7 +47,7 @@ Widget settings(context) {
           child: Material(
             child: Wrap(
               alignment: WrapAlignment.center,
-              children: [],
+              children: const [],
             ),
           )),
     ],

lib/partials/post_text_renderer.dart

@@ -1,7 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_markdown/flutter_markdown.dart';
 import 'package:html2md/html2md.dart' as html2md;
-import 'package:localization/localization.dart';
 import 'package:loris/dialogues/profile_view.dart';
 import 'package:url_launcher/url_launcher.dart';
 import '../business_logic/account/account.dart' as account;