Remove temporary loki fix

Fixes loki not starting after upgrading to chart 2.10.1

flux2/apps/monitoring/loki-values-configmap.yaml

@@ -20,16 +20,6 @@ data:
         - ReadWriteOnce
       size: 10Gi
       annotations: {}
-    # Prevent RO filesystem on /tmp
-    # https://open.greenhost.net/stackspin/stackspin/-/issues/1033
-    # Can get removed once https://github.com/grafana/helm-charts/issues/609
-    # is fixed also for the loki helm chart.
-    extraVolumes:
-      - name: tmp
-        emptyDir: {}
-    extraVolumeMounts:
-      - name: tmp
-        mountPath: /tmp
     config:
       ingester:
         chunk_idle_period: 30m