another attempt to fix wxPanel/wxFrame::m_winLastFocused handling

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10341 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/wincmn.cpp

@@ -225,16 +225,6 @@ wxWindowBase::~wxWindowBase()
 
     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 
-    // make sure that there are no dangling pointers left pointing to us
-    wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
-    if ( panel )
-    {
-        if ( panel->GetLastFocus() == this )
-        {
-            panel->SetLastFocus((wxWindow *)NULL);
-        }
-    }
-
 #if wxUSE_CARET
     if ( m_caret )
         delete m_caret;