remove (#15749)

Signed-off-by: zirain <zirain2009@gmail.com>

content/en/news/releases/1.22.x/announcing-1.22/change-notes/index.md

@@ -23,10 +23,6 @@ These notices describe functionality that will be removed in a future release ac
   This is particularly useful when doing TLS origination, allowing to set `port:80, targetPort: 443`.
   If undesired, set `--compatibilityVersion=1.21` to revert to the old behavior or remove the `targetPort` specification.
 
-- **Improved** XDS generation to do utilize fewer resources when possible, sometimes omitting a response entirely.
-  This can be disabled by the `PILOT_PARTIAL_FULL_PUSHES=false` environment variable, if necessary.
-  ([Issue #37989](https://github.com/istio/istio/issues/37989)),([Issue #37974](https://github.com/istio/istio/issues/37974))
-
 - **Added** support for skipping the initial installation of the CNI entirely.
 
 - **Added** a node taint controller to istiod which removes the `cni.istio.io/not-ready` taint from a node once the Istio CNI pod is ready on that node.

content/zh/news/releases/1.22.x/announcing-1.22/change-notes/index.md

@@ -24,10 +24,6 @@ aliases:
   这在进行 TLS 发起时特别有用，允许设置 `port:80, targetPort: 443`。
   如果不需要，请设置 `--compatibilityVersion=1.21` 以恢复到旧行为或删除 `targetPort` 规范。
 
-- **改进** 改进了尽可能利用更少的资源生成 XDS，有时会完全忽略响应。
-  如果需要，可以通过 `PILOT_PARTIAL_FULL_PUSHES=false` 环境变量禁用此功能。
-  ([Issue #37989](https://github.com/istio/istio/issues/37989)),([Issue #37974](https://github.com/istio/istio/issues/37974))
-
 - **新增** 添加了支持完全跳过 CNI 的初始安装。
 
 - **新增** 向 istiod 添加了一个节点污点控制器，一旦 Istio CNI Pod 在该节点上准备就绪，