Remove slo:period_error_budget_remaining:ratio slo (#1359)

* Remove slo:period_error_budget_remaining:ratio slo

This PR removes the slo for `slo:period_error_budget_remaining:ratio` as this value creates 18k timeseries just to compute `1 - slo:error_budget:ratio` which makes no sense

* Update CHANGELOG.md

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Removed
+
+- Remove aggregation of slo:period_error_budget_remaining:ratio` as this value can be easily computed and creates a lot of time series in Grafana Cloud
+
 ## [4.15.0] - 2024-09-16
 
 ### Added

helm/prometheus-rules/templates/platform/atlas/recording-rules/grafana-cloud.rules.yml

@@ -603,23 +603,6 @@ spec:
             )
           ) by (cluster_id, cluster_type, customer, installation, pipeline, provider, region, slo, service)
         record: aggregation:slo:period_burn_rate:ratio
-      - expr: |-
-          sum(
-            label_replace(
-              label_replace(
-                slo:period_error_budget_remaining:ratio,
-                "slo",
-                "$1",
-                "sloth_id",
-                "(.*)"
-              ),
-              "service",
-              "$1",
-              "sloth_service",
-              "(.*)"
-            )
-          ) by (cluster_id, cluster_type, customer, installation, pipeline, provider, region, slo, service)
-        record: aggregation:slo:period_error_budget_remaining:ratio
       - expr: |-
           sum(
             label_replace(