Cleanup old configurations we no longer use.

We have a bunch of old hosts, host_vars and roles we no longer use.
There is no real value to keep them as they can just be fetched from the
git history, should they be needed again.
This make gettin a overview of the repository much simpler.

playbooks/deploy.yaml

@@ -1,7 +1,4 @@
 ---
-- name: engelsystem_specific_pre_tasks
-  ansible.builtin.import_playbook: engelsystem_specific_pre_tasks.yaml
-
 - name: Ensure SSH server config deployment on ssh_server_config_hosts
   hosts: ssh_server_config_hosts
   roles:
@@ -17,21 +14,6 @@
   roles:
     - nextcloud
 
-- name: Ensure HiFiBerry deployment on hifiberry_hosts
-  hosts: hifiberry_hosts
-  roles:
-    - hifiberry
-
-- name: Ensure bluetooth audio sink deployment on bluetooth_audio_sink_hosts
-  hosts: bluetooth_audio_sink_hosts
-  roles:
-    - bluetooth_audio_sink
-
-- name: Ensure shairport sync deployment on shairport_sync_hosts 
-  hosts: shairport_sync_hosts
-  roles:
-    - shairport_sync
-
 - name: Ensure ola deployment on ola_hosts
   hosts: ola_hosts
   roles:
@@ -42,26 +24,11 @@
   roles:
     - foobazdmx
 
-- name: Ensure Mosquitto MQTT broker deployment on mosquitto_hosts
-  hosts: mosquitto_hosts
-  roles:
-    - mosquitto
-
-- name: Ensure Zigbee2MQTT deployment on zigbee2mqtt_hosts
-  hosts: zigbee2mqtt_hosts
-  roles:
-    - zigbee2mqtt
-
 - name: Ensure Dokuwiki config
   hosts: wiki
   roles:
     - dokuwiki
 
-- name: Ensure certificate deployment on cert_hosts
-  hosts: cert_hosts
-  roles:
-    - cert
-
 - name: Ensure NGINX deployment on nginx_hosts, which are also public_reverse_proxy_hosts, before certbot role runs
   hosts: nginx_hosts:&public_reverse_proxy_hosts
   roles: