Remove obsolete Prometheus alerts

Remove set of three useless alerts:
- PrometheusTargetSamplesOrderWarning
- PrometheusTargetSamplesBoundsWarning
- PrometheusTargetSamplesDuplicateWarning

Remove old 1.7 alert:
- PrometheusDataIngestionWarning

Change-Id: Idc0e5f11d6927816de9cc1e949b9a20a29b46626
PROD-related: PROD-27670 (PROD:27670)
1 file changed