I trust your on-the-ground survey, and value that you’ve taken the time to explain fully why you’re deleting the track, I think that makes sense. My point is that it because it’s still shown in the imagery (regardless of how old that imagery is), an armchair mapper may re-add the track, and all the context of your survey would not be re-added.

I’ll undo your edit and tag the track as abandoned (which is stronger than disused; see https://wiki.openstreetmap.org/wiki/Lifecycle_prefix#Stages_of_decay). It then won’t show up on the map, but will show up in the editor.

Thanks for your work to improve the map :D