Use the instructions below to remove an Outlook 2013 Exchange account.
In the “View by” drop down menu near the top right-hand corner of the Control Panel, click on “Small icons“.
Click on “Mail (32-bit)“.
Under “Profiles”, click on “Show Profiles“.
Click the name of the profile you want to delete, and click “Remove“
You will see a message asking if you are sure you wnt to remove the profile. Click “Yes“. You have successfully deleted your Exchange account.