diff --git a/build/kube-prometheus/mixins/monitoring/mixin.libsonnet b/build/kube-prometheus/mixins/monitoring/mixin.libsonnet
deleted file mode 100644
index cc0c8934..00000000
--- a/build/kube-prometheus/mixins/monitoring/mixin.libsonnet
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  _config+:: {
-    selector: '',
-  },
-  prometheusAlerts+:: {
-    groups+: [
-      {
-        name: 'monitoring',
-        rules: [
-          {
-            alert: 'WatchdogMissing',
-            expr: 'changes(watchdog_alerts_total[65m]) == 0',
-            'for': '10m',
-            labels: {
-              severity: 'critical',
-              alert_id: 'WatchdogMissing',
-            },
-            annotations: {
-              description: 'Prometheus Stack instance **{{ $labels.exported_instance }}** has stopped sending watchdog alerts',
-              summary: 'Prometheus Stack instance has sent less than 1 watchdog alert in the past 35 minutes.',
-            },
-          },
-        ],
-      },
-    ],
-  },
-}
diff --git a/build/kube-prometheus/mixins/monitoring/prometheus.yaml b/build/kube-prometheus/mixins/monitoring/prometheus.yaml
deleted file mode 100644
index 353e37ad..00000000
--- a/build/kube-prometheus/mixins/monitoring/prometheus.yaml
+++ /dev/null
@@ -1,12 +0,0 @@
-groups:
-- name: monitoring
-  rules:
-  - alert: WatchdogMissing
-    annotations:
-      description: Prometheus Stack instance **{{ $labels.exported_instance }}** has stopped sending watchdog alerts
-      summary: Prometheus Stack instance has sent less than 1 watchdog alert in the past 35 minutes.
-    expr: changes(watchdog_alerts_total[65m]) == 0
-    for: 10m
-    labels:
-      alert_id: WatchdogMissing
-      severity: critical