This is a followup to b8f59cdc20e9d83ce63523ef917e95fcee07f134:
'list-runtime-roots' no longer depends on 'lsof'.
* gnu/services/base.scm (<guix-configuration>)[lsof]: Remove.
(guix-shepherd-service): Adjust accordingly.
* doc/guix.texi (Base Services): Adjust accordingly.
* gnu/system.scm (%base-packages): Remove LSOF.