kubeadm: apply changes around "master" taint for 1.25

The "master" taint is no longer applied on control plane
nodes by kubeadm 1.25.

Remove mentions of the taint from the documentation:
- implementation details
- create a kubeadm cluster
- known labels / taints

content/en/docs/reference/labels-annotations-taints/_index.md

@@ -695,14 +695,3 @@ Used on: Node
 Example: `node-role.kubernetes.io/control-plane:NoSchedule`
 
 Taint that kubeadm applies on control plane nodes to allow only critical workloads to schedule on them.
-
-### node-role.kubernetes.io/master
-
-Used on: Node
-
-Example: `node-role.kubernetes.io/master:NoSchedule`
-
-Taint that kubeadm applies on control plane nodes to allow only critical workloads to schedule on them.
-
-{{< note >}} Starting in v1.20, this taint is deprecated in favor of `node-role.kubernetes.io/control-plane`
-and will be removed in v1.25.{{< /note >}}

content/en/docs/reference/setup-tools/kubeadm/implementation-details.md

@@ -319,12 +319,10 @@ Please note that:
 As soon as the control plane is available, kubeadm executes following actions:
 
 - Labels the node as control-plane with `node-role.kubernetes.io/control-plane=""`
-- Taints the node with `node-role.kubernetes.io/master:NoSchedule` and `node-role.kubernetes.io/control-plane:NoSchedule`
+- Taints the node with `node-role.kubernetes.io/control-plane:NoSchedule`
 
-Please note that:
+Please note that the phase to mark the control-plane phase phase can be invoked
-
+individually with the [`kubeadm init phase mark-control-plane`](/docs/reference/setup-tools/kubeadm/kubeadm-init-phase/#cmd-phase-mark-control-plane) command.
-1. The `node-role.kubernetes.io/master` taint is deprecated and will be removed in kubeadm version 1.25
-1. Mark control-plane phase phase can be invoked individually with the [`kubeadm init phase mark-control-plane`](/docs/reference/setup-tools/kubeadm/kubeadm-init-phase/#cmd-phase-mark-control-plane) command
 
 ### Configure TLS-Bootstrapping for node joining
 

content/en/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm.md

@@ -303,7 +303,7 @@ reasons. If you want to be able to schedule Pods on the control plane nodes,
 for example for a single machine Kubernetes cluster, run:
 
 ```bash
-kubectl taint nodes --all node-role.kubernetes.io/control-plane- node-role.kubernetes.io/master-
+kubectl taint nodes --all node-role.kubernetes.io/control-plane-
 ```
 
 The output will look something like:
@@ -313,14 +313,9 @@ node "test-01" untainted
 ...
 ```
 
-This will remove the `node-role.kubernetes.io/control-plane` and
+This will remove the `node-role.kubernetes.io/control-plane:NoSchedule` taint
-`node-role.kubernetes.io/master` taints from any nodes that have them,
+from any nodes that have it, including the control plane nodes, meaning that the
-including the control plane nodes, meaning that the scheduler will then be able
+scheduler will then be able to schedule Pods everywhere.
-to schedule Pods everywhere.
-
-{{< note >}}
-The `node-role.kubernetes.io/master` taint is deprecated and kubeadm will stop using it in version 1.25.
-{{< /note >}}
 
 ### Joining your nodes {#join-nodes}
 

content/en/docs/setup/production-environment/tools/kubeadm/troubleshooting-kubeadm.md

@@ -351,7 +351,7 @@ A known solution is to patch the kube-proxy DaemonSet to allow scheduling it on
 nodes regardless of their conditions, keeping it off of other nodes until their initial guarding
 conditions abate:
 ```
-kubectl -n kube-system patch ds kube-proxy -p='{ "spec": { "template": { "spec": { "tolerations": [ { "key": "CriticalAddonsOnly", "operator": "Exists" }, { "effect": "NoSchedule", "key": "node-role.kubernetes.io/master" }, { "effect": "NoSchedule", "key": "node-role.kubernetes.io/control-plane" } ] } } } }'
+kubectl -n kube-system patch ds kube-proxy -p='{ "spec": { "template": { "spec": { "tolerations": [ { "key": "CriticalAddonsOnly", "operator": "Exists" }, { "effect": "NoSchedule", "key": "node-role.kubernetes.io/control-plane" } ] } } } }'
 ```
 
 The tracking issue for this problem is [here](https://github.com/kubernetes/kubeadm/issues/1027).