Clean up contributors

Author: rafmudaf

README.md

@@ -6,7 +6,6 @@ Technology Collaboration Programme (TCP).
 The work included here is typically the result of collaborative research and development
 through the following tasks:
 - [IEA Wind Task 37](https://iea-wind.org/task37/): Systems Engineering
-- [IEA Wind Task 43](https://iea-wind.org/task43/): Wind Energy Digitalization
 - [IEA Wind Task 55](https://iea-wind.org/task55/): Reference Wind Turbines and Plants
 
 Projects included in this organization are: