Like the DateTime Hide Seconds module → , Reset Date Field provides a much needed feature to the rather barebones DateTime core module.
DateTime Hide Seconds supports dateranges in addition to simple datetime fields.
If it's not too much bother, it'd be nice if Reset Date Field would also work on dateranges.
A great person with intimate knowledge of the Reset Date Field module should make it Drupal 10 and daterange compatible.
Or maybe persuade the DateTime Hide Seconds guys to incorporate the DateTime Hide Seconds functionality in their module.
Closed: works as designed
1.0
Code
The Multiple fields remove button → module does what we wish for. No need to update this module.