Merge pull request #27391 from sftim/20210403_remove_kubeadm_dual_stack_front_page

Don't mention kubeadm dual-stack as a site front page feature

Author: k8s-ci-robot

content/en/docs/setup/production-environment/tools/kubeadm/dual-stack-support.md

@@ -1,7 +1,5 @@
 ---
 title: Dual-stack support with kubeadm
-feature:
-  title: Dual-stack support with kubeadm
 content_type: task
 weight: 110
 min-kubernetes-server-version: 1.21