test_fluidsystems: no reason to initialize MPI here

thus we no longer depend on dune-common

CMakeLists_files.cmake

@@ -385,6 +385,7 @@ list (APPEND TEST_SOURCE_FILES
       tests/test_cubic.cpp
       tests/test_EvaluationFormat.cpp
       tests/test_fluidmatrixinteractions.cpp
+      tests/test_fluidsystems.cpp
       tests/test_messagelimiter.cpp
       tests/test_nonuniformtablelinear.cpp
       tests/test_OpmInputError_format.cpp
@@ -400,7 +401,6 @@ list (APPEND TEST_SOURCE_FILES
 list(APPEND DUNE_TEST_SOURCE_FILES
       tests/test_co2brine_ptflash.cpp
       tests/test_densead.cpp
-      tests/test_fluidsystems.cpp
       tests/test_immiscibleflash.cpp
       tests/test_ncpflash.cpp
       tests/test_pengrobinson.cpp

tests/test_fluidsystems.cpp

@@ -65,8 +65,6 @@
 #include <opm/input/eclipse/Schedule/Schedule.hpp>
 #endif
 
-#include <dune/common/parallel/mpihelper.hh>
-
 // check that the blackoil fluid system implements all non-standard functions
 template <class Evaluation, class FluidSystem>
 void ensureBlackoilApi()
@@ -309,10 +307,8 @@ inline void testAll()
     testAllFluidSystems<Scalar, /*FluidStateEval=*/Evaluation, /*LhsEval=*/Scalar>();
 }
 
-int main(int argc, char **argv)
+int main()
 {
-    Dune::MPIHelper::instance(argc, argv);
-
     testAll<double>();
     testAll<float>();