[skcq] Alerts have move to Managed Prometheus.

Bug: skia:13542
Change-Id: I9d4dc92b55d0f6d66695e51a46a324f677d490f3
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/565599
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
Auto-Submit: Joe Gregorio <jcgregorio@google.com>
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>
diff --git a/promk/prometheus/alerts_corp.yml b/promk/prometheus/alerts_corp.yml
index e4e43b0..bfde594 100644
--- a/promk/prometheus/alerts_corp.yml
+++ b/promk/prometheus/alerts_corp.yml
@@ -32,13 +32,3 @@
       description: 'The error rate on {{ $labels.app }} is too high.
       https://console.cloud.google.com/logs/viewer?project={{ $labels.project }}&resource=k8s_container%2Fcluster_name%2F{{ $labels.cluster }}%2Fnamespace_name%2Fdefault%2Fcontainer_name%2F{{ $labels.app }}'
 
-  - alert: SkCQBackendErrorRate
-    expr: rate(num_log_lines{level="ERROR",app=~"skcq-be"}[1h]) > 0.001
-    labels:
-      category: infra
-      severity: critical
-      owner: rmistry@google.com
-    annotations:
-      abbr: '{{ $labels.app }}'
-      description: 'The error rate on {{ $labels.app }} is too high.
-      https://console.cloud.google.com/logs/viewer?project={{ $labels.project }}&resource=k8s_container%2Fcluster_name%2F{{ $labels.cluster }}%2Fnamespace_name%2Fdefault%2Fcontainer_name%2F{{ $labels.app }}'