Remove CNI alpha warning

content/en/docs/concepts/extend-kubernetes/compute-storage-net/network-plugins.md

@@ -11,16 +11,11 @@ weight: 10
 
 <!-- overview -->
 
-{{< feature-state state="alpha" >}}
-{{< caution >}}Alpha features can change rapidly. {{< /caution >}}
-
 Network plugins in Kubernetes come in a few flavors:
 
 * CNI plugins: adhere to the appc/CNI specification, designed for interoperability.
 * Kubenet plugin: implements basic `cbr0` using the `bridge` and `host-local` CNI plugins
 
-
-
 <!-- body -->
 
 ## Installation
@@ -166,9 +161,4 @@ This option is provided to the network-plugin; currently **only kubenet supports
 * `--network-plugin=kubenet` specifies that we use the `kubenet` network plugin with CNI `bridge` and `host-local` plugins placed in `/opt/cni/bin` or `cni-bin-dir`.
 * `--network-plugin-mtu=9001` specifies the MTU to use, currently only used by the `kubenet` network plugin.
 
-
-
 ## {{% heading "whatsnext" %}}
-
-
-