FEM: ccx inputwriter, get rid of a duplicate in 1DFlow section
FEM: ccx inputwriter, get rid of a duplicate in 1DFlow section

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master