Surface: modernize C++: use equals default

src/Mod/Surface/Gui/TaskSections.cpp

@@ -276,9 +276,7 @@ SectionsPanel::SectionsPanel(ViewProviderSections* vp, Surface::Sections* obj) :
 /*
  *  Destroys the object and frees any allocated resources
  */
-SectionsPanel::~SectionsPanel()
-{
-}
+SectionsPanel::~SectionsPanel() = default;
 
 void SectionsPanel::setupConnections()
 {
@@ -590,11 +588,6 @@ TaskSections::TaskSections(ViewProviderSections* vp, Surface::Sections* obj)
     Content.push_back(taskbox1);
 }
 
-TaskSections::~TaskSections()
-{
-    // automatically deleted in the sub-class
-}
-
 void TaskSections::setEditedObject(Surface::Sections* obj)
 {
     widget1->setEditedObject(obj);