because the track closed more than 4 years ago, I think it's plausable that there are very few traces left 

Instead of deleting a feature, another option is to change the tag `highway=path` to `was:highway=path`. This way, anyone who edits here in the future can see the history of the path and any previous discussions

To do this you'll need to use the advanced tag editor in the bottom left corner after you select the track. 

background info: https://wiki.osm.org/Lifecycle_prefix