Open Gmail. On the top of the screen you’ll see three lines. Go to “Settings” and go to “Manage Accounts”. Select “Remove” next to the account you want gone. Confirm your choice. Select “Done” on the top left.
How do I delete a Gmail account from the app?
To send the email you need to launch the Gmail app and click on the menu on the top. Next, you need to tap on “Manage messages” and then the “Edit” option. Select the “Remove” next to the account you want to delete.