- Parameter was not properly documented, so not clear what it was doing
- Parameter not implemented by any renderers AFAICT
- Parameter is neither well-suited for formatting date for data transmission purposes, or for display purposes:
- Transmission purposes: Better to use ISO 8601 format as it's standardized.
- Display purposes: Likely better for the renderer to handle display of dates using a localization library to adapt based on the user location and preferences. Otherwise, this complexity is pushed to the backend.