removing the well potential from WellsManager constructor.

tests/test_multisegmentwells.cpp

@@ -107,12 +107,11 @@ struct SetupMSW {
                                         Opm::UgGridHelpers::cell2Faces(grid),
                                         Opm::UgGridHelpers::beginFaceCentroids(grid),
                                         dummy_dynamic_list,
-                                        false
+                                        false,
                                         // We need to pass the optionaly arguments
                                         // as we get the following error otherwise
                                         // with c++ (Debian 4.9.2-10) 4.9.2 and -std=c++11
                                         // converting to ‘const std::unordered_set<std::basic_string<char> >’ from initializer list would use explicit constructor
-                                        , std::vector<double>(), // null well_potentials
                                         std::unordered_set<std::string>());
 
         const Wells* wells = wells_manager.c_wells();