Remove unnecessary variables from the helper files

[SilviaAmAm]

Not all charts need these vars:

{{/*
Worker labels
*/}}
{{- define "<name>.workerLabels" -}}
{{ include "<name>.commonLabels" . }}
{{ include "<name>.workerSelectorLabels" . }}
{{- end }}

{{/*
Worker selector labels
*/}}
{{- define "<name>.workerSelectorLabels" -}}
app.kubernetes.io/name: {{ include "<name>.workerName" . }}
{{- end }}

We should check from which charts it can be removed.