update CHANGELOG

Author: tmonk42

CHANGELOG.md

@@ -4,6 +4,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 This CHANGELOG follows the format listed [here](https://github.com/sensu-plugins/community/blob/master/HOW_WE_CHANGELOG.md)
 
 ## [Unreleased]
+- removed codeclimate (@tmonk42)
 
 ## [16.1.0] - 2018-11-02
 ### Changed