wxComboCtrl::Clear() will call wxComboCtrl::SetValue(), but wxItemContainer::Clear() will call it too. So no need to call wxComboCtrl::Clear() here

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77828 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/univ/combobox.h

@@ -124,7 +124,6 @@ public:
     // override these methods to disambiguate between two base classes versions
     virtual void Clear() wxOVERRIDE
     {
-        wxComboCtrl::Clear();
         wxItemContainer::Clear();
     }