I created a application view to work with my sample application and now I wish to delete it. How can I do that?
In the application detail, near the application view at the top right corner you have a red cross for deleting it.
HTH,
Julien
But that will just delete the application view. How can you delete the api clients which get created?

For the API client you can’t delete it using the UI nor the API. You need to open a support ticket, so someone does it using the backoffice.
@jvermillard thanks for clarifying that!