Open the Debug launch configurations dialog
box. Instructions for doing this can be found in Starting
to debug.
In the Debug launch configurations dialog
box, select the launch configuration that you would like to delete. You may
need to expand the launch configuration type node to find the launch configuration.
Do one of the following:
Click Delete.
Right-click the launch configuration and choose Delete from
the pop-up menu.
Press the Delete key.
Click Close to exit the dialog box or continue
on in the dialog box if you wish to work with other launch configurations.