Task: Open the Gmail App, Go to profile, Select the Manage your Account, go to the drop down icon and remove sign out the account. 
Steps:
Open the Gmail App
Click on the Profile 
Click on the Manage your Account Button 
Click on the Manage your Account Button 
Click on the drop down icon 
click on the manage account on this device option 
Click on the dbwscratch.test.id6@gmail.com 
Click on the remove account button to sign out the account 
Click on the remove account option to confirm