How to delete user-defined build settings in Xcode

Question

I have created several user-defined build settings in Xcode 4.3.1. I no longer need these settings and want to delete them, but there doesn't seem to be a way to delete them!

I am aware that these are stored in the project settings (project.pbxproj) file located within the xcodeproj file. But I don't want to edit these in a text editor as there are all sorts of repetitions and guids which I don't understand.

Any suggestions on how I can do this within Xcode? (or have they forgotten to add a "delete" button)

Answer 1

Select one of them and press keyboard's delete button.