You can hide or delete accounts that you don't want to see in the account list:

• Hide account:
  Go to 'Accounts' > Select the account in question > Tap on the three dots in the upper right corner > Go to 'Settings' > Select 'Hide this account'
• Delete account:
  Go to 'Accounts' > Select the account in question > Tap on the three dots in the upper right corner > Go to 'Settings' > Select 'Delete this account' or
  Go to 'Settings' > Select the 'Bank credentials' > Choose the account > Select 'Delete this account'