release-plz: remove cargo release config

Author: Firestar99

CHANGELOG.md

@@ -5,29 +5,6 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-<!-- NOTE(eddyb) sections from the original template:
-
-### Added ⭐
-- New features go here in a bullet list
-
-### Changed 🛠
-- Changes to existing functionality go here in a bullet list
-
-### Deprecated 🚧
-- Mark features soon-to-be removed in a bullet list
-
-### Removed 🔥
-- Features that have been removed in a bullet list
-
-### Fixed 🩹
-- Bug fixes in a bullet list
-
-### Security 🔐
-- Changes/fixes related to security vulnerabilities in a bullet list
-
--->
-
-<!-- next-header -->
 ## [Unreleased]
 
 ### Changed 🛠
@@ -469,7 +446,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 Initial release.
 
-<!-- next-url -->
 [Unreleased]: https://github.com/rust-gpu/rust-gpu/compare/v0.9.0...HEAD
 [0.9.0]: https://github.com/EmbarkStudios/rust-gpu/releases/tag/v0.9.0
 [0.8.0]: https://github.com/EmbarkStudios/rust-gpu/releases/tag/v0.8.0