How do I (easily) delete a constraint in Interface Builder in Xcode 6

Question

Assume you\'ve selected an object and you have the Size Selector in the Utilities panel open. You can see the list of constraints applied to the object. In the list of constrain

Answer 1

This answer from @wayne chi is the simplest, and spares you from hunting down constraints in Document Outline:

Double click the grayed out constraint (switches focus to the constraint) then press delete. This will delete the constraint.