[A/U] Use unique_ptr.

Applications/Utils/FileConverter/FEFLOW2OGS.cpp

Applications/Utils/FileConverter/OGS2VTK.cpp

...Utils/MeshEdit/CreateBoundaryConditionsAlongPolylines.cpp

Applications/Utils/MeshEdit/MoveMesh.cpp

Applications/Utils/MeshEdit/checkMesh.cpp

Applications/Utils/MeshEdit/editMaterialID.cpp

Applications/Utils/MeshEdit/moveMeshNodes.cpp

Applications/Utils/MeshEdit/reviseMesh.cpp