rsyslog: use top-level docutils

pkgs/tools/system/rsyslog/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, pkg-config, autoreconfHook, libestr, json_c, zlib, pythonPackages, fastJson
+{ lib, stdenv, fetchurl, pkg-config, autoreconfHook, libestr, json_c, zlib, docutils, fastJson
 , libkrb5 ? null, systemd ? null, jemalloc ? null, libmysqlclient ? null, postgresql ? null
 , libdbi ? null, net-snmp ? null, libuuid ? null, curl ? null, gnutls ? null
 , libgcrypt ? null, liblognorm ? null, openssl ? null, librelp ? null, libksi ? null
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config autoreconfHook ];
   buildInputs = [
-    fastJson libestr json_c zlib pythonPackages.docutils libkrb5 jemalloc
+    fastJson libestr json_c zlib docutils libkrb5 jemalloc
     postgresql libdbi net-snmp libuuid curl gnutls libgcrypt liblognorm openssl
     librelp libksi liblogging libnet hadoop rdkafka libmongo-client czmq
     rabbitmq-c hiredis mongoc libmaxminddb