removed *.rel.tunnels.api.visualstudio.com due to redundancy

Author: rongxin-liu

cs50.dev.md

@@ -155,7 +155,6 @@ Visual Studio Code for CS50 is built atop [GitHub Codespaces](https://github.com
 * `*.microsoft.com`
 * `*.msecnd.net`
 * `*.visualstudio.com`
-* `*.rel.tunnels.api.visualstudio.com`
 * `*.vscode-webview.net`
 * `*.windows.net`