I created some dummy projects. Now I don\'t see any way to delete the projects that I don\'t want. Per this suggestion I can delete files, the project is going away but there is
On OSX Mountain Lion and IDEA 14, with the project open and focused, you can go to file -> close project, then delete the project from your filesystem. This removed all references to the project.
Note that if the project you are deleting is the only project open, closing it will show the welcome dialog, which will still show the project. Deleting the project manually from within your operating system is the next step, and the project will still appear in the welcome dialog until it is closed and shown again, usually by opening another project from the list, or quitting and restarting IDEA.