chore: remove benches label

Author: LeoBorai

README.md

@@ -14,7 +14,6 @@
 ![Clippy](https://github.com/http-server-rs/http-server/workflows/clippy/badge.svg)
 ![Formatter](https://github.com/http-server-rs/http-server/workflows/fmt/badge.svg)
 ![Tests](https://github.com/http-server-rs/http-server/workflows/test/badge.svg)
-![Benches](https://github.com/http-server-rs/http-server/workflows/bench/badge.svg)
 
 </div>