Hello guys,
In training mode I have always some planned training. I do not know why. I don’t have any Garmin Plans, any imported plans to Edge from external applications.
Do you know how I can delete this all scheduled trainings?

Scroll all the way to the bottom of the screen you have shown in the picture above. Select the pencil on the bottom left. Swipe left on TRAINING. A trash can should be displayed. Select the trash can if you want to delete the TRAINING "glance" from the main screen. Hope this helps.
Sorry, maybe I misunderstood. But I guess you're not trying to delete the training widget, just delete the daily suggested workouts from the widget. I just tried turning that off as well, but my daily suggestion for today still shows up there, probably exactly what you're experiencing. Unfortunately we may have to chalk that up to another item within the 1040 that doesn't work correctly. But there's always the possibility I don't understand it correctly.
I believe you can disable the training glance shown on the screenshot, but not the area on top which seems to switch between a planned/suggested workout (or rest day), last added workout (if you created/uploaded one) or last ride (if you completed a ride recently).