How to remove the old calendar from the application Liron December 25, 2016 10:05 Follow Go to "Settings" and select "Mail, Contacts and Calendar." Select "Subscribed calendar" and delete it (WorldMate). Related articles WorldMate creates duplicate items in my calendar Why are you closing the WorldMate app? What will happen to the app after March 31st? How do I remove the old calendar from the app and sign in to the new calendar service? Comments 0 comments Please sign in to leave a comment.