If you are not using an Experience any more it can be deleted. Before deleting an Experience you must disassociate it from all Links. You can do this on the Links page in Glaze Manager. Simply delete any Links pointing to the Experience.

Next, select your Experience and click the configuration button (cogwheel).

At the bottom of the General tab you can click Delete the Experience.

Note that if you delete an Experience, there is no way to restore it and all of its content will be lost.