Arrgh -- remove debugging printf.

This commit was SVN r29657.

ompi/mca/btl/usnic/btl_usnic_stats.c

@@ -401,7 +401,6 @@ static void setup_mpit_pvars_enum(void)
                  m->if_cidrmask);
         assert(rc > 0);
         devices[i].string = str;
-        opal_output(0, "Set string: %s", str);
     }
     devices[i].string = NULL;