message: Use publicly deleted copy operations for FactoryProduction
diff: @@ -16,6 +16,8 @@ class FactoryProduction : public Window
  {
  public:
  FactoryProduction();
  + FactoryProduction(const FactoryProduction&) = delete;
  + FactoryProduction& operator=(const FactoryProduction&) = delete;
  ~FactoryProduction() override;
  void factory(Factory* newFactory);
  @@ -39,10 +41,6 @@ private:
  void productSelectionChanged(const IconGrid::IconGridItem*);
  -private:
  - FactoryProduction(const FactoryProduction&) = delete;
  - FactoryProduction& operator=(const FactoryProduction&) = delete;
  -
  private:
  Factory* mFactory = nullptr;
  