How to remove labels in alert template?

Hi, i found a template for alert manager for alerts, but i receive many unnecessary labels in notification. How to remove labels in template? This code is responsible for labels (look below). I dont have deep knowledge in Go Templating system & Json, so i m asking for help.

{{ if gt (len $alerts.Labels.SortedPairs) 0 -}},
"labels": 
    {{ "{" }}
        {{ range $index, $label := $alerts.Labels.SortedPairs }}
            {{ if $index }}, 
            {{ end }}
            "{{ $label.Name }}": "{{ $label.Value }}"
        {{ end }}
    {{ "}" }}
{{- end }}