WP Crontrol allows you to delete all events with a given hook, but not if the hook is a persistent WordPress core one. Although I've never seen WordPress core events duplicated like this, it makes sense to allow them to be cleared out in this manner.
The "Delete all events with this hook" action should be present for any event where there's more than one event scheduled with that hook.
Ref: https://wordpress.org/support/topic/how-to-delete-duplicate-cron-jobs-with-the-same-name/
WP Crontrol allows you to delete all events with a given hook, but not if the hook is a persistent WordPress core one. Although I've never seen WordPress core events duplicated like this, it makes sense to allow them to be cleared out in this manner.
The "Delete all events with this hook" action should be present for any event where there's more than one event scheduled with that hook.