made wxTLW::SetIcon() non-virtual, it was already implemented in terms of

SetIcons() in most of the ports, now do it in all of them


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45322 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/os2/toplevel.h

@@ -67,7 +67,6 @@ public:
     virtual void Maximize(bool bMaximize = true);
     virtual void Restore(void);
     virtual void SendSizeEvent(void);
-    virtual void SetIcon(const wxIcon& rIcon);
     virtual void SetIcons(const wxIconBundle& rIcons);
 
     virtual bool Show(bool bShow = true);