disable systemd service in yocto?

in file meta-xxx/recipes-core/systemd/systemd_%.bbappend

do_configure_append() {

  #disabling autostart of systemd-timesyncd      sed -i -e "s/enable systemd-timesyncd.service/disable systemd-timesyncd.service/g" ${S}/presets/90-systemd.preset    #disabling autostart of systemd-resolved      sed -i -e "s/enable systemd-resolved.service/disable systemd-resolved.service/g" ${S}/presets/90-systemd.preset  }