Sheet: modernize C++: use equals default

src/Mod/Spreadsheet/App/AppSpreadsheet.cpp

@@ -39,8 +39,6 @@ public:
         initialize("This module is the Spreadsheet module."); // register with Python
     }
 
-    ~Module() override {}
-
 private:
 };
 

src/Mod/Spreadsheet/App/Cell.cpp

@@ -166,9 +166,7 @@ Cell &Cell::operator =(const Cell &rhs)
   *
   */
 
-Cell::~Cell()
-{
-}
+Cell::~Cell() = default;
 
 /**
   * Set the expression tree to \a expr.

src/Mod/Spreadsheet/App/PropertyColumnWidths.cpp

@@ -38,9 +38,7 @@ const int PropertyColumnWidths::defaultHeaderWidth = 50;
 
 TYPESYSTEM_SOURCE(Spreadsheet::PropertyColumnWidths , App::Property)
 
-PropertyColumnWidths::PropertyColumnWidths()
-{
-}
+PropertyColumnWidths::PropertyColumnWidths() = default;
 
 PropertyColumnWidths::PropertyColumnWidths(const PropertyColumnWidths &other)
   : Property(), std::map<int, int>(other)

src/Mod/Spreadsheet/App/PropertyRowHeights.cpp

@@ -37,9 +37,7 @@ const int PropertyRowHeights::defaultHeight = 30;
 
 TYPESYSTEM_SOURCE(Spreadsheet::PropertyRowHeights , App::Property)
 
-PropertyRowHeights::PropertyRowHeights()
-{
-}
+PropertyRowHeights::PropertyRowHeights() = default;
 
 PropertyRowHeights::PropertyRowHeights(const PropertyRowHeights &other)
   : Property(), std::map<int, int>(other)

src/Mod/Spreadsheet/App/Sheet.h

@@ -58,8 +58,8 @@ class SpreadsheetExport PropertySpreadsheetQuantity : public App::PropertyQuanti
 {
     TYPESYSTEM_HEADER_WITH_OVERRIDE();
 public:
-    PropertySpreadsheetQuantity(){}
-    ~PropertySpreadsheetQuantity() override{}
+    PropertySpreadsheetQuantity() = default;
+    ~PropertySpreadsheetQuantity() override = default;
 
     Property *Copy() const override;
     void Paste(const Property &from) override;

src/Mod/Spreadsheet/App/SheetObserver.h

@@ -33,7 +33,7 @@ class PropertySheet;
 class SheetObserver : public App::DocumentObserver {
 public:
     SheetObserver(App::Document* document, PropertySheet *_sheet);
-    ~SheetObserver() override { }
+    ~SheetObserver() override = default;
     void slotCreatedObject(const App::DocumentObject& Obj) override;
     void slotDeletedObject(const App::DocumentObject& Obj) override;
     void slotChangedObject(const App::DocumentObject& Obj, const App::Property& Prop) override;

src/Mod/Spreadsheet/Gui/AppSpreadsheetGui.cpp

@@ -63,8 +63,6 @@ namespace SpreadsheetGui {
             initialize("This module is the SpreadsheetGui module."); // register with Python
         }
 
-        ~Module() override {}
-
     private:
         Py::Object open(const Py::Tuple& args)
         {

src/Mod/Spreadsheet/Gui/DlgSettingsImp.cpp

@@ -43,10 +43,7 @@ DlgSettingsImp::DlgSettingsImp( QWidget* parent )
 /** 
  *  Destroys the object and frees any allocated resources
  */
-DlgSettingsImp::~DlgSettingsImp()
-{
-    // no need to delete child widgets, Qt does it all for us
-}
+DlgSettingsImp::~DlgSettingsImp() = default;
 
 void DlgSettingsImp::saveSettings()
 {

src/Mod/Spreadsheet/Gui/SheetTableView.cpp

@@ -459,10 +459,7 @@ void SheetTableView::removeColumns()
     Gui::Command::doCommand(Gui::Command::Doc, "App.ActiveDocument.recompute()");
 }
 
-SheetTableView::~SheetTableView()
-{
-
-}
+SheetTableView::~SheetTableView() = default;
 
 void SheetTableView::updateCellSpan()
 {

src/Mod/Spreadsheet/Gui/SpreadsheetView.cpp

@@ -550,9 +550,7 @@ SheetViewPy::SheetViewPy(SheetView *mdi)
 {
 }
 
-SheetViewPy::~SheetViewPy()
-{
-}
+SheetViewPy::~SheetViewPy() = default;
 
 Py::Object SheetViewPy::repr()
 {

src/Mod/Spreadsheet/Gui/Workbench.cpp

@@ -63,9 +63,7 @@ Workbench::Workbench()
 {
 }
 
-Workbench::~Workbench()
-{
-}
+Workbench::~Workbench() = default;
 
 void Workbench::activated()
 {