I have an XCode project that I tried to delete manually, and I did delete it, but some reference is left - apparently. This reference is making this project still display on the Welcome screen of XCode (XCode version 7.3) on El Capitan. If I try to double click on this non-existing project I get message in a popup "The file 'project.xcworkspace' doesn’t exist." and after that, when I click OK in that popup, I get another popup with message "The file 'Skocko.xcodeproj' doesn’t exist." How can I completely remove this project and not have it on Welcome page, since it is very confusing issue?