Remove release from changelog

Author: LehMaxence

CHANGELOG.md

@@ -7,8 +7,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
-## [v1.0.0-rc.1] - 2023-09-06
-
 ### Changed
 - [breaking-change] Replace serial-rs with the serialport-rs crate. `Serial::open` now needs a baud-rate argument as well.
 - Updated to `embedded-hal` `1.0.0-rc.1` release ([API changes](https://github.com/rust-embedded/embedded-hal/blob/master/embedded-hal/CHANGELOG.md#v100-rc1---2023-08-15))