disable rollout operator by default

Signed-off-by: Edward Welch <edward.welch@grafana.com>

production/helm/loki/values.yaml

@@ -177,12 +177,6 @@ loki:
     {{- if .enabled }}
     chunk_store_config:
       chunk_cache_config:
-        async_cache_write_back_buffer_size: 500000
-        async_cache_write_back_concurrency: 1
-        background:
-          writeback_goroutines: 1
-          writeback_buffer: 500000
-          writeback_size_limit: 250MB
         default_validity: {{ .defaultValidity }}
         memcached:
           batch_size: {{ .batchSize }}
@@ -3019,7 +3013,7 @@ chunksCache:
 ######################################################################################################################
 # -- Setting for the Grafana Rollout Operator https://github.com/grafana/helm-charts/tree/main/charts/rollout-operator
 rollout_operator:
-  enabled: true
+  enabled: false
 
   # -- podSecurityContext is the pod security context for the rollout operator.
   # When installing on OpenShift, override podSecurityContext settings with