ompi/errhandler: remove useless include file

and avoid #includ'ing stuff that breaks C++ compilers

ompi/errhandler/errhandler.h

@@ -37,7 +37,6 @@
 #include "opal/class/opal_pointer_array.h"
 #include "opal/mca/pmix/pmix.h"
 
-#include "ompi/mca/rte/rte.h"
 #include "ompi/runtime/mpiruntime.h"
 #include "ompi/errhandler/errhandler_predefined.h"
 #include "ompi/errhandler/errcode-internal.h"