choose the one that you want to remove and there will be a button that says 'remove account' click on that. That's it you can not see more that Google account. Easy, just go to the Settings app >> Account >> Google. Then, select the account that you want to remove.
Delete your Google Account - Google Account Help Learn what deleting your account means: You’ll lose all the data and content in that account, like … Delete your Google Account information from a device Delete your Google Account information from a device. To protect your Google Account information, we recommend you take the following precautions when using someone else’s device, or when you plan to give away or throw away a device. If you plan to use someone else’s computer, tablet, or smartphone and don’t want your personal How to Remove Google From Your Life (And Why That’s Nearly Apr 16, 2018 How to Remove Google Account from Chrome - Delete it Now
How to remove my Gmail account from a device - Quora
2.) Going thru the "google security checkup" route, it only shows me a list of actively used devices, which does not include the foreign device. So, I assume Google is the one who will "remove" the unknown device off my "device activity" list in 24 days. As long as I've changed my password I should be OK. How do I remove a user account from my desktop computer Mar 26, 2015
Remove computers & devices from your trusted list. Open your Google Account. You might need to sign in. Under "Security," select Signing in to Google. Choose 2-Step Verification. Under "Devices you trust," select Revoke all.
How do I remove a user account from my desktop computer Mar 26, 2015 How to remove a Google account from an Android or iOS