Removed Obsolete Undocumented Embedded Dictionaries That Were Used by Yandex.metrica

Removed obsolete undocumented embedded dictionaries that were used by Yandex.Metrica. The functions OSIn, SEIn, OSToRoot, SEToRoot, OSHierarchy, SEHierarchy are no longer available. If you are using these functions, write email to [email protected]. Note: at the last moment we decided to keep these functions for a while. #5780 (alexey-milovidov)