Drop scheduler services from scheduler nodes

They only keep the rabbitmq backend now.

The cleanup of those nodes will happen manually.

Refs. swh/infra/sysadm-environment#5035

manifests/site.pp

@@ -41,7 +41,7 @@ node /^counters\d\.internal\.softwareheritage\.org$/ {
 }
 
 node 'saatchi.internal.softwareheritage.org' {
-  include role::swh_scheduler_with_journal_client
+  include role::swh_scheduler
 }
 
 node /^(belvedere|somerset|massmoca).(internal.)?softwareheritage.org$/ {
@@ -159,7 +159,7 @@ node "bardo.internal.admin.swh.network" {
 }
 
 node 'scheduler0.internal.staging.swh.network' {
-  include role::swh_scheduler_with_journal_client
+  include role::swh_scheduler
   include profile::postgresql::client
 }
 

site-modules/role/manifests/swh_scheduler.pp

 class role::swh_scheduler inherits role::swh_server {
-  # Scheduler
   include profile::rabbitmq
-  include profile::swh::deploy::scheduler
 }

site-modules/role/manifests/swh_scheduler_with_journal_client.pp

-# Install the swh-scheduler stack + the scheduler's journal client
-class role::swh_scheduler_with_journal_client inherits role::swh_scheduler {
-  include profile::swh::deploy::scheduler::journal_client
-}