[numerics,swig] remove cs_sparse, since it is replaced by scipy.sparse.
[numerics,swig] remove cs_sparse, since it is replaced by scipy.sparse.

radarsat1/siconos,bremond/siconos,radarsat1/siconos,fperignon/siconos,radarsat1/siconos,siconos/siconos,radarsat1/siconos,radarsat1/siconos,bremond/siconos,siconos/siconos,siconos/siconos,bremond/siconos,fperignon/siconos,bremond/siconos,siconos/siconos,fperignon/siconos,bremond/siconos,fperignon/siconos,fperignon/siconos