fix: [docs] Remove crates.io and docs.rs badges (not published yet)

Keep only verified working badges: CI status, license, and MSRV.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: iglocska

README.md

@@ -1,8 +1,6 @@
 # RustMISP
 
 [![CI](https://github.com/iglocska/RustMISP/actions/workflows/ci.yml/badge.svg)](https://github.com/iglocska/RustMISP/actions/workflows/ci.yml)
-[![Crates.io](https://img.shields.io/crates/v/rustmisp.svg)](https://crates.io/crates/rustmisp)
-[![docs.rs](https://docs.rs/rustmisp/badge.svg)](https://docs.rs/rustmisp)
 [![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE)
 [![Rust](https://img.shields.io/badge/rust-1.85%2B-orange.svg)](https://www.rust-lang.org/)