Remove unused function

Fwk/AppFwk/cafProjectDataModel/cafPdmUiCore/cafPdmUiObjectHandle.h

@@ -91,13 +91,6 @@ protected:
     {
     }
 
-    /// Override to provide tree editor specific attributes for the field and uiConfigName
-    virtual void defineTreeEditorAttribute( const caf::PdmFieldHandle* field,
-                                            QString                    uiConfigName,
-                                            caf::PdmUiEditorAttribute* attribute )
-    {
-    }
-
     /// Override to provide editor specific data for the uiConfigName for the object
     virtual void defineObjectEditorAttribute( QString uiConfigName, caf::PdmUiEditorAttribute* attribute ) {}