Update CHANGELOG.md

Author: nhedger

CHANGELOG.md

@@ -22,9 +22,3 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## New Contributors
 * @nhedger made their first contribution
-# Changelog
-
-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).