Updated: Dec 12, 2019
Here are some easy steps to remove the trusted devices from your Google account.
Step 1: In your Android tablet or mobile phone, first open the Google Chrome browser and follow the link http://myaccount.google.com/security which displays the device's settings.
Step 2: You are required to type your username and password to sign in with your Google account.
Step 3: Once you log in, a welcome screen will be displayed.
Step 4: Here you are required to select on the 'Security' key.
Step 5: Select on the 2-step verification on the Security tab.
Step 6: Now, you need to confirm your password and click on the button 'Next'.
Step 7: After that, scroll down further and click on the 'Revoke All' button to remove the trusted devices from the Google account.