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/gtk1/toplevel.h

@@ -47,7 +47,6 @@ public:
     virtual bool IsMaximized() const;
     virtual void Iconize(bool iconize = true);
     virtual bool IsIconized() const;
-    virtual void SetIcon(const wxIcon& icon);
     virtual void SetIcons(const wxIconBundle& icons);
     virtual void Restore();