top: eliminate an unused error message and its support

This commit just eliminates an error message no longer
needed under that newlib <pids> interface. Plus, a few
enumerators in the header weren't in alphabetic order.

Signed-off-by: Jim Warner <james.warner@comcast.net>

top/top_nls.c

@@ -306,7 +306,6 @@ static void build_norm_nlstab (void) {
    Norm_nlstab[HELP_cmdline_fmt] = _(""
       "  %s\n"
       "Usage:\n  %s%s");
-   Norm_nlstab[FAIL_openlib_fmt] = _("failed openproc: %s");
    Norm_nlstab[BAD_delayint_fmt] = _("bad delay interval '%s'");
    Norm_nlstab[BAD_niterate_fmt] = _("bad iterations argument '%s'");
    Norm_nlstab[LIMIT_exceed_fmt] = _("pid limit (%d) exceeded");