Let 'unscheduled panel' not have 'No date set' field
Description
Unscheduled panel only shows items that doesn't have any date set. So the text 'No date set' is better not present in 'Unscheduled panel.'
Submitted by: Mohammed Sadiq <<sad..@..org>>
Assigned to: gnome-todo-maint@gnome.bugs
Original ticket: #776425