Fehlerkorrekturen

lib/content_views/messages_page.dart

@@ -1,4 +1,3 @@
-import 'dart:convert';
 
 import 'package:flutter/material.dart';
 import 'package:flutter_chat_ui/flutter_chat_ui.dart';
@@ -13,7 +12,6 @@ import 'package:stadtbote/model/session_status.dart';
 import 'package:stadtbote/tools/constants.dart';
 import 'package:stadtbote/tools/message_service.dart';
 import 'package:stadtbote/tools/messages/publish_payload_message.dart';
-import 'package:stadtbote/tools/mqtt_core.dart';
 
 import '../tools/util.dart';