Remove prometheus-msteams

The prometheus-msteams integration in Kolla
Ansible has been removed, users should switch to
the native Prometheus msteams integration.

https://prometheus.io/docs/alerting/latest/configuration/#msteams_config

Author: Alex-Welsh

etc/kayobe/environments/aufn-ceph/kolla/inventory/overcloud-services.j2

@@ -416,9 +416,6 @@ monitoring
 [prometheus-libvirt-exporter:children]
 compute
 
-[prometheus-msteams:children]
-prometheus-alertmanager
-
 [masakari-api:children]
 control
 

etc/kayobe/pulp.yml

@@ -510,7 +510,6 @@ stackhpc_pulp_images_kolla:
   - prometheus-elasticsearch-exporter
   - prometheus-libvirt-exporter
   - prometheus-memcached-exporter
-  - prometheus-msteams
   - prometheus-mtail
   - prometheus-mysqld-exporter
   - prometheus-node-exporter