Mod: modernize C++: use equals default

src/Mod/Web/Gui/AppWebGui.cpp

@@ -78,8 +78,6 @@ public:
         initialize("This module is the WebGui module."); // register with Python
     }
 
-    ~Module() override {}
-
 private:
     Py::Object openBrowser(const Py::Tuple& args)
     {

src/Mod/Web/Gui/BrowserView.cpp

@@ -126,9 +126,8 @@ UrlWidget::UrlWidget(BrowserView *view) :
     setText(QLatin1String("https://"));
     hide();
 }
-UrlWidget::~UrlWidget()
-{
-}
+
+UrlWidget::~UrlWidget() = default;
 
 void UrlWidget::keyPressEvent(QKeyEvent *keyEvt)
 {
@@ -201,9 +200,7 @@ BrowserViewPy::BrowserViewPy(BrowserView* view) : base(view)
 {
 }
 
-BrowserViewPy::~BrowserViewPy()
-{
-}
+BrowserViewPy::~BrowserViewPy() = default;
 
 BrowserView* BrowserViewPy::getBrowserViewPtr()
 {

src/Mod/Web/Gui/Workbench.cpp

@@ -39,13 +39,9 @@ using namespace WebGui;
 /// @namespace WebGui @class Workbench
 TYPESYSTEM_SOURCE(WebGui::Workbench, Gui::StdWorkbench)
 
-Workbench::Workbench()
-{
-}
+Workbench::Workbench() = default;
 
-Workbench::~Workbench()
-{
-}
+Workbench::~Workbench() = default;
 
 void Workbench::setupContextMenu(const char* recipient,Gui::MenuItem* item) const
 {