I reverted your original edit because I was able to confirm that these trails exist and that people have recently used the trails. Strava, AllTrails, and TrailForks all show recent activity data for these trails.

You can learn more about why you can't just delete trails you don't want on the map by reading this wiki page.

https://wiki.openstreetmap.org/wiki/Why_can%27t_I_delete_this_trail%3F