Removing default prometheus service annotations in Helm (#547)

* Removing prometheus annotations

* Updating service manifest

* removed duplicate type attribute

* removed extra linebreak

---------

Co-authored-by: loujar <louis.jarvis@sourcegraph.com>
Co-authored-by: Louis Jarvis <31862633+loujar@users.noreply.github.com>

Author: airamare01

charts/sourcegraph-executor/k8s/templates/executor.Service.yaml

@@ -2,8 +2,6 @@ apiVersion: v1
 kind: Service
 metadata:
   annotations:
-    prometheus.io/port: "6060"
-    sourcegraph.prometheus/scrape: "true"
     {{- if .Values.executor.serviceAnnotations }}
     {{- toYaml .Values.executor.serviceAnnotations | nindent 4 }}
     {{- end }}