Prometheus: Add deprecation message for AMP in Promehteus docs (#96689)

deprecate message for AMP in prom docs

docs/sources/datasources/prometheus/_index.md

@@ -163,17 +163,7 @@ For details about these metrics, refer to [Internal Grafana metrics](ref:set-up-
 
 ## Amazon Managed Service for Prometheus
 
-The Prometheus data source works with Amazon Managed Service for Prometheus.
-
-If you use an AWS Identity and Access Management (IAM) policy to control access to your Amazon Elasticsearch Service domain, you must use AWS Signature Version 4 (AWS SigV4) to sign all requests to that domain.
-
-For details on AWS SigV4, refer to the [AWS documentation](https://docs.aws.amazon.com/general/latest/gr/signature-version-4.html).
-
-### AWS Signature Version 4 authentication
-
-To connect the Prometheus data source to Amazon Managed Service for Prometheus using SigV4 authentication, refer to the AWS guide to [Set up Grafana open source or Grafana Enterprise for use with AMP](https://docs.aws.amazon.com/prometheus/latest/userguide/AMP-onboard-query-standalone-grafana.html).
-
-If you run Grafana in an Amazon EKS cluster, follow the AWS guide to [Query using Grafana running in an Amazon EKS cluster](https://docs.aws.amazon.com/prometheus/latest/userguide/AMP-onboard-query-grafana-7.3.html).
+The Prometheus data source with Amazon Managed Service for Prometheus is deprecated. Please use the [Amazon Managed service for Prometheus data source](https://grafana.com/grafana/plugins/grafana-amazonprometheus-datasource/). Migrations steps are detailed in the link.
 
 ## Azure authentication settings