Remove hooks to create Prometheus Alert
As part of the deprecation of Alerts for Managed Prometheus we are now at the stage of removing code.
This change ensures we are no-longer creating PrometheusAlert records, as stopping from trying to update Managed Prometheus Clusters with alert information.
- Removes code to automatically create PromtheusAlerts. This includes when the Prometheus integration is created.
- Also removes updates to the Prometheus Cluster. As adding and editing alerts is removed this is no longer needed.
Related to #341074 (closed)
Edited by Sean Arnold