fix icoco import when mpi4py is avail

Author: roland-lenain

src/icoco/utils.py

@@ -27,12 +27,7 @@ class MEDCouplingField:  # pylint: disable=too-few-public-methods
 
 
 try:
-    import mpi4py
-    mpi4py.rc.initialize = False
-    mpi4py.rc.finalize = False
     from mpi4py.MPI import Intracomm as MPIComm  # type: ignore  # pylint: disable=unused-import
-    mpi4py.rc.initialize = True
-    mpi4py.rc.finalize = True
 except ModuleNotFoundError:  # pragma: no cover
     class MPIComm:  # pylint: disable=too-few-public-methods
         """Basic class for type hinting when mi4py is not available"""