I did some research with OSMCha https://osmcha.org/changesets/139820022/ and found out that they come from a deleted path https://www.openstreetmap.org/way/206853042/history . For me it looks like the user just deleted the way in Josm, but for some reason forgot the nodes. 

In NRW DTM Hillshade the path is still visible, so maybe it got deleted by accident. I have no local knowledge, so can´t say if the way is still existing. What do you want to do, Re-Add way; delete the points; or waiting for someone responding? 

I´m not sure about that.