pjpops
The purpose of the tracks and paths to be included on OSM is if there is physical evidence of such, or there is a right of way (not always associated with a physical 'track').
In this instance, both the original creator of the note, and myself, can see no evidence of a physical existence of the footpath, nor is it included on Ordnance Survey maps beyond 1958 (the latest map I can see of the path on NLS maps).
Therefore I deleted the path, as it no longer serves a purpose, whether public or private.
From aerial imagery, it appears that there are other tracks in regular use on adjacent fields, but without access, it is impossible to survey.
Mapping all lost footpaths would lead to very misleading mapping, including websites and apps which provide automatically derived routing of walking routes, such as Strava and the Ordnance Survey website which utilises OSM data (it's currently possible to use this non-existent path to provide route guidance).
My suggestion is still to remove the footpath and add it again if it becomes reinstated.