Removing prometheus service as there is only a single pod. (#50)

charts/controller/Chart.yaml

 apiVersion: v2
 name: juice-controller
-version: 1.0.7
+version: 1.0.8
 type: application
 home: https://github.com/Juice-Labs/Juice-Labs
 icon: https://raw.githubusercontent.com/Juice-Labs/Juice-Labs/master/assets/Juice.svg

charts/controller/templates/prometheus-service.yaml

-{{- if .Values.prometheus }}
-apiVersion: v1
-kind: Service
-metadata:
-  name: {{ .Values.service.namePrefix }}-prometheus
-{{- if .Values.service.additionalAnnotations }}
-  annotations:
-{{- if .Values.service.additionalAnnotations }}
-{{ toYaml .Values.service.additionalAnnotations | indent 4 }}
-{{- end }}
-{{- end }}
-spec:
-  selector:
-    app.juicelabs.co/controller: prometheus
-  ports:
-    - protocol: TCP
-      port: {{ .Values.prometheus.port }}
-      targetPort: prometheus
-{{- if .Values.service.additionalSpec }}
-{{ toYaml .Values.service.additionalSpec | indent 2 }}
-{{- end}}
-{{- end }}