If you are no longer collaborating on a project and wish to have it removed from your Project View, you can leave the project.

To leave a project:

If you simply want to hide the project from your dashboard, hover over the image, click the circle at the top right, then click the hide icon at the bottom of your screen. The project will be moved to your Hidden Tab. Note: projects in the hidden tab do still impact billing for the account to which they belong.

If you are the Project Owner and wish to leave the project, you must first transfer project ownership to someone else within the project. See Transferring Project Ownership for more information.