modernize C++: avoid bind

In many cases std::bind() is kept because the code is much simpler

src/Gui/ViewProviderDocumentObject.cpp

@@ -272,7 +272,9 @@ void ViewProviderDocumentObject::addDefaultAction(QMenu* menu, const QString& te
     QAction* act = menu->addAction(text);
     act->setData(QVariant((int)ViewProvider::Default));
     auto func = new Gui::ActionFunction(menu);
-    func->trigger(act, std::bind(&ViewProviderDocumentObject::startDefaultEditMode, this));
+    func->trigger(act, [this](){
+        this->startDefaultEditMode();
+    });
 }
 
 void ViewProviderDocumentObject::setModeSwitch() {