To remove a library reference from the project classpath, follow this procedure:

1. Right-click on the project in the Project Explorer view and select Properties from the drop-down menu.This will open the Propertis dialog.
2. On the Propertis dialog, select the Java Build Path from the list of properties.
3. On the Java Build Path part of the dialog, select the Libraries tab.
4. Find the entry in the list of libraries called Shared Library [<library-name>], and then select it.
5. Click Remove.