Update README.md

Author: lerndevops

kube/install/README.md

@@ -99,34 +99,3 @@
 ```
 kubeadm token create --print-join-command --ttl=0
 ```
-
-## FYI Only: Reconstructing the Join Command for Kubeadm
-
-```
-skeleton of a kubeadm join command for a control plane node:
-
-kubeadm join <endpoint-ip-or-dns>:<port> \
---token <valid-bootstrap-token> \
---discovery-token-ca-cert-hash <ca-cert-sha256-hash> \
---control-plane \
---certificate-key <certificate-key>
-```
-
-```
-skeleton of a kubeadm join command for a worker node:
-
-kubeadm join <endpoint-ip-or-dns>:<port> \
---token <valid-bootstrap-token> \
---discovery-token-ca-cert-hash <ca-cert-sha256-hash> \
-```  
-
-```
-get the controleplane IP:PORT: kubectl cluster-info
-
-list exsiting tokens: kubeadm token list
-
-Create kubeadm bootstrap token: kubeadm token create
-
-find ca-cert-hash with openssl:
-   openssl x509 -in /etc/kubernetes/pki/ca.crt -pubkey -noout | openssl pkey -pubin -outform DER | openssl dgst -sha256
-```