Stop duplicating wxFrame dtor in all ports.

wxGTK1, wxGTK, wxMSW and wxOSX all did the same thing in their wxFrame dtor,
so just do it in wxFrameBase instead.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76804 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/frame.cpp

@@ -135,13 +135,6 @@ bool wxFrame::Create(wxWindow *parent,
     return true;
 }
 
-wxFrame::~wxFrame()
-{
-    SendDestroyEvent();
-
-    DeleteAllBars();
-}
-
 // ----------------------------------------------------------------------------
 // wxFrame client size calculations
 // ----------------------------------------------------------------------------