Removing old Athena packages, now replaced and extended by standalone GeoModelIO

...Model/GeoModelStandalone/GeoModelDBManager/CMakeLists.txt

...ndalone/GeoModelDBManager/GeoModelDBManager/GMDBManager.h

.../GeoModelStandalone/GeoModelDBManager/src/GMDBManager.cpp

...el/GeoModelStandalone/GeoModelErrorHandler/CMakeLists.txt

.../GeoModelErrorHandler/GeoModelErrorHandler/ErrorHandler.h

...iption/GeoModel/GeoModelStandalone/GeoRead/CMakeLists.txt

...ion/GeoModel/GeoModelStandalone/GeoRead/GeoRead/GReadIn.h

...andalone/GeoRead/examples/hellogeo/CMakeLists.txt.example

...odelStandalone/GeoRead/examples/hellogeo/main.cpp.example

...ption/GeoModel/GeoModelStandalone/GeoRead/src/GReadIn.cpp

...ption/GeoModel/GeoModelStandalone/GeoWrite/CMakeLists.txt

...ndalone/GeoWrite/GeoWrite/DumpGeoModelAction.h.oldVersion

...delStandalone/GeoWrite/GeoWrite/DumpGeoModelActionLocal.h

...ndalone/GeoWrite/GeoWrite/WriteGeoModelAction.h.oldSqlite

...odelStandalone/GeoWrite/src/DumpGeoModelAction.oldVersion

...oModelStandalone/GeoWrite/src/DumpGeoModelActionLocal.cpp

...Standalone/GeoWrite/src/WriteGeoModelAction.cxx.oldSqlite

...odel/GeoModelStandalone/TFPersistification/CMakeLists.txt

...Standalone/TFPersistification/TFPersistification/ACosIO.h

...Standalone/TFPersistification/TFPersistification/ASinIO.h