This has to be so simple since googleing for hours didn't give any result.
I successfully uploaded an onboard led blink test project on my Edison using XDK IoT Edition.
Regardless if I stopped it, whenever I turn on the board, the onboard led restarts blinking.
How do I remove the project from the board?
Another option is to upload another XDK Project on your board to overwrite the first one. You can also stop or disable the xdk-daemon service.