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/common/framecmn.cpp

@@ -165,7 +165,9 @@ wxFrameBase::wxFrameBase()
 
 wxFrameBase::~wxFrameBase()
 {
-    // this destructor is required for Darwin
+    SendDestroyEvent();
+
+    DeleteAllBars();
 }
 
 wxFrame *wxFrameBase::New(wxWindow *parent,