remove faq for old versions (zeromicro#828)

readme-cn.md

@@ -161,13 +161,8 @@ GO111MODULE=on GOPROXY=https://goproxy.cn/,direct go get -u github.com/tal-tech/
 
   [https://go-zero.dev/cn/](https://go-zero.dev/cn/)
 
-* 常见问题
-
-  * 因为 `protobuf` 兼容性问题，请使用 `[email protected]`
-
-    `go get -u github.com/golang/protobuf/[email protected]`
-
 * awesome 系列（更多文章见『微服务实践』公众号）
+
   * [快速构建高并发微服务](https://github.com/tal-tech/zero-doc/blob/main/doc/shorturl.md)
   * [快速构建高并发微服务 - 多 RPC 版](https://github.com/tal-tech/zero-doc/blob/main/docs/zero/bookstore.md)
   * [goctl 使用帮助](https://github.com/tal-tech/zero-doc/blob/main/doc/goctl.md)

readme.md

@@ -211,14 +211,7 @@ go get -u github.com/tal-tech/go-zero
 * [Rapid development of microservice systems - multiple RPCs](https://github.com/tal-tech/zero-doc/blob/main/docs/zero/bookstore-en.md)
 * [Examples](https://github.com/zeromicro/zero-examples)
 
-## 9. Important notes
-
-* For protobuf compatibility, use `[email protected]`.
-
-  ` go get -u github.com/golang/protobuf/[email protected]`
-
-
-## 10. Chat group
+## 9. Chat group
 
 Join the chat via https://join.slack.com/t/go-zero/shared_invite/zt-thyennhc-_fNXFpeUJcGE_tQNZFpsdA