Consider removing some Arduino/Nordic libraries

[ghost]

Several of the libraries for Arduino/Norduc/RFDuino etc are not really libraries in the proper sense (generalized/reusable code), they are more like helper functions that could just as well belong to the application.

Review these libraries and move them to examples if needed, then also remove them from the generated library documentation package in https://github.com/evothings/evothings-doc