Update extension pack readme. (#9456)

Author: sean-mcmanus

ExtensionPack/README.md

@@ -7,4 +7,3 @@ This extension pack includes a set of popular extensions for C++ development in
 * [CMake Tools](https://marketplace.visualstudio.com/items?itemName=ms-vscode.cmake-tools)
 * [Doxygen Documentation Generator](https://marketplace.visualstudio.com/items?itemName=cschlosser.doxdocgen)
 * [Better C++ Syntax](https://marketplace.visualstudio.com/items?itemName=jeff-hykin.better-cpp-syntax)
-* [Remote Development Extension Pack](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.vscode-remote-extensionpack)