Macros: Use new settings page convenience

Change-Id: I42caad4311d4238310a767543acafe0a142917f4
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/macros/macrooptionspage.h

@@ -27,27 +27,15 @@
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
-#include <QPointer>
-
 namespace Macros {
 namespace Internal {
 
-class MacroOptionsWidget;
-
 class MacroOptionsPage : public Core::IOptionsPage
 {
     Q_OBJECT
 
 public:
     MacroOptionsPage();
-
-    // IOptionsPage implementation
-    QWidget *widget() override;
-    void apply() override;
-    void finish() override;
-
-private:
-    QPointer<MacroOptionsWidget> m_widget;
 };
 
 } // namespace Internal