Revert two commits

This reverts two recent commits which were pushed into the main by mistake

GeoModelTools/GeoModelValidation/GeoModelValidation/GeoMaterialHelper.h

-/*
-  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
-*/
-
-///////////////////////////////////////////////////////////////////
-// GeoMaterialHelper.h, (c) ATLAS Detector software
-///////////////////////////////////////////////////////////////////
-
-#ifndef GEOMATERIALHELPER_H
-#define GEOMATERIALHELPER_H
-
-#include <GeoModelKernel/GeoDefinitions.h>
-
-class GeoMaterial;
-class GeoVPhysVol;
-
-namespace GeoModelTools {
-
-    /**
-    @class GeoMaterialHelper
-    
-    A helper class that browses the GeoModel tree for material estimates
-        
-    @author sarka.todorova@cern.ch
-    */
-
-    typedef  std::pair< const GeoMaterial*, double >  materialComponent;
-    
-    class GeoMaterialHelper {
-      
-      public:
-        /** Default constructor*/
-        GeoMaterialHelper()
-       {}
-
-        /** Destructor*/
-        virtual ~GeoMaterialHelper(){}
-    
-        /** Evaluate mass ( of a GeoModel tree/branch/volume ) */
-        float evaluateMass(const GeoVPhysVol* gv, bool inclusive = true) const;
-
-        /** Collect and blend material : return blended material (the client takes the ownership) and effective volume */
-	std::pair< const GeoMaterial* , double > collectMaterial(const GeoVPhysVol* gv) const;
-
-      private:
-	/** Internal recursive loop over material components */
-	void collectMaterialContent( const GeoVPhysVol* gv, std::vector< GeoModelTools::materialComponent >& materialContent ) const; 
-   };
- 
-
-} // end of namespace GeoModelTools
-
-#endif
-