Remove duplicate release note

ScIT-Raphael · web-flow · commit 3a974e0408f2 · 2022-06-16T15:28:39.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,7 +2,6 @@
 All notable changes to this project will be documented in this file.
 
 ## [1.6.0] - Major Release (Feature / Quality Update)
-## [1.5.15] - Service release
 
 ### Important Notes
 
