In the Open Context Settings dialog, select the context that
you want to delete and click OK.
In the main Configuration Manager window, click Delete.
When prompted for confirmation, click Yes.
Note: When
you delete a context, all project data associated with the context
is deleted. However, the database associated with the context is
deleted only if it is a Derby database. For Microsoft SQL Server/SQL
Server Express Edition and Oracle, you need to manually delete the
database.