fix(sustainability-rules): remove Kepler energy rules since Kepler is incompatible

otc/observability.buildth.ing/stacks/observability/victoria-k8s-stack/manifests/ci-sustainability-rules.yaml

@@ -58,18 +58,4 @@ spec:
             sum by(cluster) (
               node_memory_MemTotal_bytes - node_memory_MemAvailable_bytes
             )
-    - name: ci.sustainability.energy
-      interval: 5m
-      rules:
-        - record: ci:joules:increase1d
-          expr: |
-            sum by(container_namespace, cluster) (
-              increase(kepler_container_joules_total{
-                container_namespace=~"gitea|garm"
-              }[1d])
-            )
-        - record: cluster:joules:rate5m
-          expr: |
-            sum by(cluster) (
-              rate(kepler_node_joules_total[5m])
-            )
+