remove empty changelog categories

Author: danielfeismann

CHANGELOG.md

@@ -15,17 +15,10 @@ All notable changes to this project will be documented in this file.
 
 ## 0.0.6
 
-### Added
-
 ### Changed
 - Adapt Coordinate type to use WKBElement Geography [#287](https://github.com/ie3-institute/pypsdm/issues/287)
 - Adapt to recent PSDM Version 6.0.0 [#278](https://github.com/ie3-institute/pypsdm/issue/278)
 
-### Removed
-
-### Fixed
-
-
 ## 0.0.5
 
 ### Changed