Fixes T13482. Although this style makes physical sense by relationship to a written checklist, it seems to do more harm than good in practice.
- Maniphest Tasks
- T13482: Remove strikethru style from checked-off Remarkup list items
- rP7a1681b8dae1: Don't use "line-through" style for completed items in remarkup checklists
Wrote a checklist with a checked-off item in remarkup, saw no more line-through.