Remove extra MPI initialization.

Initialization is now done in the Main::initMPI() method.
For configurations with dune-fem, this also caused crashes
with dune-fem versions prior to 2.8.

flow/flow_ebos_oilwater_polymer.cpp

@@ -25,12 +25,6 @@
 #include <opm/simulators/flow/SimulatorFullyImplicitBlackoilEbos.hpp>
 #include <opm/simulators/flow/Main.hpp>
 
-#if HAVE_DUNE_FEM
-#include <dune/fem/misc/mpimanager.hh>
-#else
-#include <dune/common/parallel/mpihelper.hh>
-#endif
-
 namespace Opm {
 namespace Properties {
 namespace TTag {
@@ -89,12 +83,6 @@ int flowEbosOilWaterPolymerMain(int argc, char** argv, bool outputCout, bool out
     // with incorrect locale settings.
     resetLocale();
 
-#if HAVE_DUNE_FEM
-    Dune::Fem::MPIManager::initialize(argc, argv);
-#else
-    Dune::MPIHelper::instance(argc, argv);
-#endif
-
     FlowMainEbos<Properties::TTag::EclFlowOilWaterPolymerProblem>
         mainfunc {argc, argv, outputCout, outputFiles};
     return mainfunc.execute();