Go to settings. Click on the Apps option. Now choose Google and you will see your email address there. Simply press option button beside home button. Click on Remove Account.
How do I remove a Gmail account from my Lenovo?
You can find your Google account in the accounts and switch it on or off. To do so, you must access the option Settings of your device. Once in the menu, choose Accounts and you must see your Google account there. Now you can simply press the option button when a home button. Then, open the menu and click on the account you want to change. You will open the option where you can simply press the “Delete account” button.