Istio-telemetry pod is hitting zipkin dns address continuously but we have istio tracing disabled

We installed istio 1.6.7 in our environment with enableTracing: false. But istio telemetry pod is getting

> --trace_zipkin_url=http://zipkin.istio-system:9411/api/v1/spans value. Now istio-telemetry pod unnecessary hitting the kube-dns very frequently. How can I disable this “–trace_zipkin_url”?. any help would be appreciated.