docs: remove deprecated vsc extension

README.md

@@ -789,7 +789,6 @@ See also [Are we (I)DE yet?](https://areweideyet.com/) and [Rust Tools](https://
     * [crates](https://github.com/serayuzgur/crates) — crates is an extension for crates.io dependencies. [![build badge](https://img.shields.io/vscode-marketplace/v/serayuzgur.crates.svg)](https://github.com/serayuzgur/crates)
     * [Prettier - Code formatter (Rust)](https://marketplace.visualstudio.com/items?itemName=jinxdash.prettier-rust) — Opinionated Rust code formatter that autofixes bad syntax ([Prettier](https://prettier.io/) community plugin)
     * [rust-analyzer](https://marketplace.visualstudio.com/items?itemName=rust-lang.rust-analyzer) — An alternative rust language server to the RLS
-    * [rust-lang/rls-vscode](https://marketplace.visualstudio.com/items?itemName=rust-lang.rust) — Rust support for Visual Studio Code (supports both RLS and rust-analyzer)
 
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