Problem/Motivation
The "RSS publishing" settings form allowed users to change basic RSS feed behaviours on Drupal prior to version 8. Drupal 8/9 now uses a view to provide the front page /rss.xml feed link. This view does not use the RSS form settings, which is confusing for users.
Proposed resolution
Remove the unnecessary configurations from admin/config/services/rss-publishing form.
Remaining tasks
None