To delete a saved account from Analytics Edge products, open the Accounts wizard for the service/connector involved, select the saved account from the list, and click the delete button.
For example, to delete a saved account used in the Google Analytics connector, open the Connector Wizards > Google Analytics > Account wizard:
Then select the account from the list and click the delete button:
Note that some account wizards may look different from the above image, but the functionality is the same — select the saved account and click the delete button provided.