docs: fix build error

docs-cn/04-connect/index.mdx

@@ -13,6 +13,7 @@ import ConnPythonNative from "./_connect_python_native.mdx";
 import ConnCSNative from "./_connect_cs_native.mdx";
 import ConnC from "./_connect_c.mdx";
 import ConnR from "./_connect_r.mdx";
+
 import InstallOnWindows from "../14-reference/03-connector/_linux_install.mdx";
 import InstallOnLinux from "../14-reference/03-connector/_windows_install.mdx";
 import VerifyWindows from "../14-reference/03-connector/_verify_linux.mdx";
@@ -32,12 +33,6 @@ TDengine 提供RESTful接口，容许在任何平台的任何应用程序通过
 1. 使用 RESTful 方式，用户无需安装客户端驱动程序 taosc，具有跨平台易用的优势，但性能要下降30%左右。
 2. 使用本地连接可以体验 TDengine 的全部功能，如[原生接口写入](/reference/connector/cpp#参数绑定-api)、[订阅](reference/connector/cpp#数据订阅接口)等等。
 
-import Tabs from "@theme/Tabs";
-import TabItem from "@theme/TabItem";
-import InstallOnWindows from "../14-reference/03-connector/_linux_install.mdx";
-import InstallOnLinux from "../14-reference/03-connector/_windows_install.mdx";
-import VerifyWindows from "../14-reference/03-connector/_verify_windows.mdx";
-import VerifyLinux from "../14-reference/03-connector/_verify_linux.mdx";
 
 ## 安装客户端驱动taosc