removed debug output to std::cout

server/src/core/abstractproperty.cpp

@@ -3,7 +3,7 @@
  *
  * This file is part of the traintastic source code.
  *
- * Copyright (C) 2019-2020 Reinder Feenstra
+ * Copyright (C) 2019-2021 Reinder Feenstra
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -23,11 +23,7 @@
 #include "abstractproperty.hpp"
 #include "object.hpp"
 
-#include <iostream>
-
 void AbstractProperty::changed()
 {
-  std::cout << "AbstractProperty::changed" << std::endl;
-
   m_object.propertyChanged(*this);
 }