This has been effectively replaced by the bffe.
* gnu/services/guix.scm (<guix-data-service-configuration>): Remove record
type.
(guix-build-coordinator-queue-builds-shepherd-services,
guix-build-coordinator-queue-builds-activation,
guix-build-coordinator-queue-builds-account): Remove procedures
(guix-build-coordinator-queue-builds-service-type): Remove service type.
Change-Id: I2a233fb10b12cc9bfddebaa35928b25c243f82a2