mark CloudDualStackNodeIPs as removed

Author: carlory

content/en/docs/reference/command-line-tools-reference/feature-gates/cloud-dual-stack-node-ips.md

@@ -17,7 +17,9 @@ stages:
   - stage: stable
     defaultValue: true
     fromVersion: "1.30"
+    toVersion: "1.31"
 
+removed: true
 ---
 Enables dual-stack `kubelet --node-ip` with external cloud providers.
 See [Configure IPv4/IPv6 dual-stack](/docs/concepts/services-networking/dual-stack/#configure-ipv4-ipv6-dual-stack)