Change to test if it compiles with the celeritas configuration functi…

…on definitions placed outside the dd4hep::sim namespace

DDG4/include/DDG4/Celeritas.h

@@ -10,29 +10,24 @@ namespace dd4hep  {
   /// Namespace for the Geant4 based simulation part of the AIDA detector description toolkit
   namespace sim  {
 
-    class LocalTransporter;
-    struct SetupOptions;
-    class SharedParams;
-
     class EMPhysicsConstructor final : public G4EmStandardPhysics
     {
     public:
         using G4EmStandardPhysics::G4EmStandardPhysics;
 
         void ConstructProcess() override;
     };
-
-    // Global shared setup options
-    celeritas::SetupOptions& CelerSetupOptions();
-    // Shared data and GPU setup
-    celeritas::SharedParams& CelerSharedParams();
-    // Thread-local transporter
-    celeritas::LocalTransporter& CelerLocalTransporter();
-    // Thread-local offload
-    celeritas::SimpleOffload& CelerSimpleOffload();
 
   } /* End namespace sim */  
 } /* End namespace dd4hep*/
 
+// Global shared setup options
+celeritas::SetupOptions& CelerSetupOptions();
+// Shared data and GPU setup
+celeritas::SharedParams& CelerSharedParams();
+// Thread-local transporter
+celeritas::LocalTransporter& CelerLocalTransporter();
+// Thread-local offload
+celeritas::SimpleOffload& CelerSimpleOffload();
 
 #endif