update changelog

Author: dvojtise

CHANGELOG.md

@@ -16,26 +16,11 @@
 
 #### Enhancements:
 
-- [**enhancement**] Event management integration [#21](https://github.com/eclipse/gemoc-studio-execution-java/pull/21)
 - [**enhancement**] Add Sirius ELK support [#15](https://github.com/eclipse/gemoc-studio-execution-java/pull/15)
 - [**enhancement**] [Event Manager PR#3] Metalanguage rule executor for java execution engine [#17](https://github.com/eclipse/gemoc-studio-execution-java/pull/17)
-- [**enhancement**] ValidationRule added to languageComponent in plugin [#10](https://github.com/eclipse/gemoc-studio-execution-java/pull/10)
-- [**enhancement**] Metaprogramming approach name changed to FullyQualifiedName [#8](https://github.com/eclipse/gemoc-studio-execution-java/pull/8)
-- [**enhancement**] Metaprog plugin modified to fit new extension point description + added LanguageComponent [#9](https://github.com/eclipse/gemoc-studio-execution-java/pull/9)
-- [**enhancement**] Validator removed from plugin.xml [#12](https://github.com/eclipse/gemoc-studio-execution-java/pull/12)
-- [**enhancement**] Validation plug-in for the Kermeta3 meta-programming approach in GEMOC Studio [#5](https://github.com/eclipse/gemoc-studio-execution-java/pull/5)
-
-#### Bug Fixes:
-
-- [**bug**] Fix windows specific issue on the K3 project creation wizard [#3](https://github.com/eclipse/gemoc-studio-execution-java/pull/3)
-
-#### Refactorings
-
-- [**refactoring**] Kermeta3Rule moved to the gemoc-modeldebugging [#6](https://github.com/eclipse/gemoc-studio-execution-java/pull/6)
 
 #### Version upgrades
 
-- [**releng**][**bump**] Bump Studio to 3.4.0 [#20](https://github.com/eclipse/gemoc-studio-execution-java/pull/20)
 - [**bump**] Bump to Eclipse 2021-06 [#19](https://github.com/eclipse/gemoc-studio-execution-java/pull/19)
 - [**bump**] Bump eclipse 2020-12 [#14](https://github.com/eclipse/gemoc-studio-execution-java/pull/14)
 - [**bump**] Bump to Eclipse 2020-03 [#13](https://github.com/eclipse/gemoc-studio-execution-java/pull/13)
@@ -44,7 +29,6 @@
 
 - [**releng**] Consolidation and automatic bump of K3 versions [#16](https://github.com/eclipse/gemoc-studio-execution-java/pull/16)
 - [**releng**] Explicit repository features [#18](https://github.com/eclipse/gemoc-studio-execution-java/pull/18)
-- [**releng**] Deploy GEMOC artefacts to maven repository (repo.eclipse.org) [#4](https://github.com/eclipse/gemoc-studio-execution-java/pull/4)
 
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