help: remove k8s, due to layout changes

Signed-off-by: Miao Wang <shankerwangmiao@gmail.com>

help/_posts/1970-01-01-kubernetes.md

@@ -1,40 +0,0 @@
----
-category: help
-layout: help
-mirrorid: kubernetes
----
-
-## Kubernetes 镜像使用帮助
-
-Kubernetes 是用于自动部署，扩展和管理容器化应用程序的开源系统。详情可见 [官方介绍](https://kubernetes.io/zh/)。
-
-**硬件架构: `x86_64`, `armhfp`, `aarch64`**
-
-### Debian/Ubuntu 用户
-
-首先导入 gpg key：
-
-```shell
-$ sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg
-```
-
-新建 `/etc/apt/sources.list.d/kubernetes.list`，内容为
-
-```
-deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://{{ site.hostname }}/kubernetes/apt kubernetes-xenial main
-```
-
-### RHEL/CentOS 用户
-
-新建 `/etc/yum.repos.d/kubernetes.repo`，内容为：
-
-```
-[kubernetes]
-name=kubernetes
-baseurl=https://{{ site.hostname }}/kubernetes/yum/repos/kubernetes-el7-$basearch
-enabled=1
-```
-
-### Minikube
-
-请到 [minikube 镜像](https://{{ site.hostname }}/github-release/kubernetes/minikube/LatestRelease/) 下载。