If you don't need a particular Service Principal in your Identity Server, you can delete this Service Principal easily from the Management Console. Follow the instructions below to delete a Service Principal from the WSO2 Identity Server.
1. Sign in. Enter your user name and password to log on to the Management Console as described here for Windows users and here for Linux users.
2. Click the "Configure" button to access the "Configure" menu.
3. From the "Configure" menu, select "Service Principals."
4. Locate the Service Principal on the "Service Principal Management" page, and click on the "Delete" link.