Hello, Guix Help! guix understands this config, but still I have avahi-daemon and ntpd services. They are not started, I want delete them at all. How to do that?

;;this is znavko's cute config

(use-modules (gnu) (gnu system nss)
             (gnu services desktop)
             (srfi srfi-1) ;;for remove function
             (gnu services networking) ;;for remove ntp
             (gnu services avahi) ;;for remove avahi
             (gnu services xorg)
             (gnu services databases);;for postgres
)
(use-service-modules desktop)
(use-package-modules certs gnome)

(operating-system (host-name "antelope") (timezone "Europe/Moscow") (locale "en_US.utf8")
  (bootloader (bootloader-configuration
                (bootloader grub-bootloader)
                (target "/dev/sda")))
  (file-systems (cons (file-system
                        (device "/dev/sda1") (mount-point "/") (type "ext4"))
                      %base-file-systems))
  (swap-devices '("/dev/sda2"))

  (users (cons* (user-account (name "bob") (group "users")
                (supplementary-groups '("wheel" "netdev" "audio" "video"))
                (home-directory "/home/bob"))
                (user-account (name "alice") (group "users")
                (supplementary-groups '("wheel" "netdev" "audio" "video"))
                (home-directory "/home/alice"))
                (user-account (name "mom") (group "users")
                (supplementary-groups '("wheel" "netdev" "audio" "video"))
                (home-directory "/home/mom"))
               %base-user-accounts))

  ;; This is where we specify system-wide packages.
  (packages (cons* nss-certs         ;for HTTPS access
                   gvfs              ;for user mounts
                   %base-packages))

  (services (cons*  ;;(tor-service)
                    (service postgresql-service-type)
                    (xfce-desktop-service)

                    (modify-services      
                        (remove (lambda (service)
                            (eq? (service-kind service) 
                                ntp-service-type avahi-service))

                            %desktop-services
                        );end of remove
                        (elogind-service-type
                            c => (elogind-configuration
                                (handle-lid-switch 'ignore)))
                    );;end of modify desktop-srvices

  ));;end of services

  ;; Allow resolution of '.local' host names with mDNS.
  (name-service-switch %mdns-host-lookup-nss))

  

# herd status
Started:
...
 + xorg-server
Stopped:
 - avahi-daemon
 - networking
 - ntpd
 - swap-/dev/sda2
 - term-auto
 - user-homes
 - wpa-supplicant
  
How delete at all avahi-daemon and ntpd?