disable using mpicc --showme:link link flags: they bring unnecessary rpath.

---
 configure.ac |    6 ------
 1 file changed, 6 deletions(-)

--- a/configure.ac
+++ b/configure.ac
@@ -585,12 +585,6 @@ fi
 
 if test x$enable_mpi = xyes -o x$build_mpi_master_slave = xyes ; then
     cc_or_mpicc=$mpicc_path
-    # For some reason, libtool uses gcc instead of mpicc when linking
-    # libstarpumpi.
-    # On Darwin (and maybe other systems ?) the linker will fail (undefined
-    # references to MPI_*). We manually add the required flags to fix this
-    # issue.
-    AC_SUBST(MPICC_LDFLAGS, `$mpicc_path --showme:link`)
 else
     cc_or_mpicc=$CC
 fi
