GetCurrentSelection() was documented but not present in all ports (just MSW and GTK); moved it to the base classes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42727 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/combobox.h

@@ -89,7 +89,6 @@ class WXDLLEXPORT wxComboBox : public wxControl, public wxComboBoxBase
     virtual void Clear();
 
     virtual int GetSelection() const;
-    int GetCurrentSelection() const { return GetSelection(); }
     virtual void SetSelection(int n);
     virtual int FindString(const wxString& s, bool bCase = false) const;
     virtual wxString GetString(unsigned int n) const;