remove the plane stress material from geo (#14353)

Author: WPK4FEM

applications/GeoMechanicsApplication/custom_constitutive/linear_elastic_plane_stress_2D_law.cpp

@@ -328,8 +328,6 @@ void KratosGeoMechanicsApplication::Register()
     KRATOS_REGISTER_CONSTITUTIVE_LAW("GeoLinearElasticPlaneStrain2DLaw", mLinearElasticPlaneStrain2DLaw)
     KRATOS_REGISTER_CONSTITUTIVE_LAW("GeoIncrementalLinearElastic3DLaw", mLinearElastic3DLaw)
 
-    KRATOS_REGISTER_CONSTITUTIVE_LAW("GeoLinearElasticPlaneStress2DLaw", mLinearElasticPlaneStress2DLaw)
-
     KRATOS_REGISTER_CONSTITUTIVE_LAW("SmallStrainUDSM3DLaw", mSmallStrainUDSM3DLaw)
     KRATOS_REGISTER_CONSTITUTIVE_LAW("SmallStrainUDSM2DPlaneStrainLaw", mSmallStrainUDSM2DPlaneStrainLaw)
     KRATOS_REGISTER_CONSTITUTIVE_LAW("SmallStrainUDSM2DInterfaceLaw", mSmallStrainUDSM2DInterfaceLaw)

applications/GeoMechanicsApplication/custom_constitutive/linear_elastic_plane_stress_2D_law.h

@@ -113,7 +113,6 @@
 #include "custom_constitutive/linear_elastic_2D_beam_law.h"
 #include "custom_constitutive/linear_elastic_2D_interface_law.h"
 #include "custom_constitutive/linear_elastic_3D_interface_law.h"
-#include "custom_constitutive/linear_elastic_plane_stress_2D_law.h"
 #include "custom_constitutive/mohr_coulomb_with_tension_cutoff.h"
 #include "custom_constitutive/plane_strain.h"
 #include "custom_constitutive/small_strain_udsm_2D_interface_law.h"
@@ -928,7 +927,6 @@ class KRATOS_API(GEO_MECHANICS_APPLICATION) KratosGeoMechanicsApplication : publ
     // constitutive models
     const GeoIncrementalLinearElasticLaw mLinearElasticPlaneStrain2DLaw{std::make_unique<PlaneStrain>()};
     const GeoIncrementalLinearElasticLaw mLinearElastic3DLaw{std::make_unique<ThreeDimensional>()};
-    const GeoLinearElasticPlaneStress2DLaw mLinearElasticPlaneStress2DLaw;
 
     const SmallStrainUDSMLaw mSmallStrainUDSM2DPlaneStrainLaw{std::make_unique<PlaneStrain>()};
     const SmallStrainUDSMLaw mSmallStrainUDSM3DLaw{std::make_unique<ThreeDimensional>()};