Removed the Introduction title from DNS for Services and Pods page

Author: sachinparihar

content/en/docs/concepts/services-networking/dns-pod-service.md

@@ -16,8 +16,6 @@ Services with consistent DNS names instead of IP addresses.
 
 <!-- body -->
 
-## Introduction
-
 Kubernetes DNS schedules a DNS Pod and Service on the cluster, and configures
 the kubelets to tell individual containers to use the DNS Service's IP to
 resolve DNS names.