Fix plugin mechanism for generic geant4 sensitive detectors

DDG4/include/DDG4/G4SDFactory.h

-// $Id: $
-//====================================================================
-//  AIDA Detector description implementation
-//--------------------------------------------------------------------
-//
-//  Author     : F.Gaede, DESY
-//
-//====================================================================
-#ifndef DD4HEP_G4SDFactory_H
-#define DD4HEP_G4SDFactory_H
-
-
-#include <string>
-
-namespace DD4hep { namespace Geometry { class LCDD ; } }
-class G4VSensitiveDetector ;
-
-/*  DD4hep namespace declaration */
-namespace DD4hep { namespace Simulation {
-    
-    
-    /** @class G4SDFactory G4SDFactory.h DDG4/G4SDFactory.h
-     *  Abstract factory base class for createion of G4VSensitiveDetectors
-     * 
-     * @author  F.Gaede, DESY
-     * @version $Id:$
-     */
-    class G4SDFactory {
-
-    public:      
-      
-      /** Implement this to create a new SD with name, initialized with the information in lcdd */
-      virtual G4VSensitiveDetector*  createSD( const std::string& name,  DD4hep::Geometry::LCDD& lcdd )=0 ;
-      
-    } ;	
-    
-
-    /** Simpleimplementation of factory for SDs that have a c'tor of the form 
-     *  T( const std::string& name,  DD4hep::Geometry::LCDD& lcdd )
-     */
-    template <class  T>
-    class SimpleG4SDFactory : public G4SDFactory {
-
-      virtual G4VSensitiveDetector*  createSD( const std::string& name,  DD4hep::Geometry::LCDD& lcdd ){
-	return new T( name,  lcdd ) ;
-      }
-    } ;
-
-
-  }    // End namespace Simulation
-}      // End namespace DD4hep
-
-#endif // DD4HEP_GEANT4SENSITIVEDETECTOR_H