update readme

README.md

@@ -61,14 +61,7 @@ De technische documentatie staat nu nog op de [website van DigiGO](https://www.b
 
 ![Documentatie van de standaard](<NLCS documentatie.png>)
 
-Shield: [![CC BY 4.0][cc-by-shield]][cc-by]
 
-This work is licensed under a
-[Creative Commons Attribution 4.0 International License][cc-by].
 
-[![CC BY 4.0][cc-by-image]][cc-by]
 
-[cc-by]: http://creativecommons.org/licenses/by/4.0/
-[cc-by-image]: https://i.creativecommons.org/l/by/4.0/88x31.png
-[cc-by-shield]: https://img.shields.io/badge/License-CC%20BY%204.0-lightgrey.svg