To remove an account from Canary on your iOS device:
1) At the upper left corner of the screen, tap the Hamburger icon.
2) In the upper-left corner of the screen, tap the Settings icon, indicated below.
3) In the Accounts window, tap on the ‘Account’ you wish to delete.
4) Scroll to the bottom of the screen and tap Delete Account.
5) Tap Yes to confirm or No to cancel.