fe): Remove workaround for Shepherd < 0.5.0, released in 2018.

Age	Commit message (Expand)	Author
2021-07-07	guix-install.sh: Prompt for configuring substitutes discovery....Also ensure prompt_yes_no always print the message with a trailing space, which is more pleasing to the eye. * etc/guix-daemon.conf.in <--discover=no>: New guix-daemon option. * etc/guix-daemon.service.in: Likewise. * etc/init.d/guix-daemon.in: Likewise. * etc/openrc/guix-daemon.in: Likewise. * etc/guix-install.sh (configure_substitute_discovery): New procedure. (sys_enable_guix_daemon): Ask the user whether automatic substitute discovery should be enabled. Set the '--discover' argument accordingly. (prompt_yes_no): Add a trailing space to the message. (sys_authorize_build_farms): Remove trailing space from the message argument. * NEWS (Distribution): Add news.	Maxim Cournoyer
Ludovic Courtès
2022-05-28	services: herd: Add 'wait-for-service'....* gnu/services/herd.scm (wait-for-service): New procedure.	Ludovic Courtès
2022-04-10	services: herd: Report whether a service is transient....* gnu/services/herd.scm (<live-service>)[transient?]: New field. (current-services): Check the value of 'transient?'. Call 'resolve-transients'. (resolve-transients): New procedure.	Ludovic Courtès