What is the best way to permanently abondon an unused cable?
Even painting it over isn''t legit; wallpaper is Right Out. (unless you want to properly create an opening for the J-box,
where to find, removal of unused wiring
Unused Openings. Unused cable or raceway openings in boxes, raceways, auxiliary gutters, cabinets, cutout boxes,
Technical note
This reference is intended for preliminary fiber optic adapter research. Compatibility, link budgets, connector interfaces, sleeve materials, polish, installation methods, test limits and applicable standards must be verified for the specific project.