You can remove a project in the Project Dashboard view. Start by clicking on the edit symbol in the heading of the project you wish to remove. This will open a project editing box where you can change the status of your project using the ‘Active’ checkbox:

When you deactivate a project, it is put on hold so that you cannot log additional time slips to it; however, your past data remains intact and accessible. You may still generate reports that include inactive projects by toggling the “show inactive projects?” flag on the Time Report or Project dashboard. In both tabs, you can find the checkbox at the bottom of the sidebar on the right:

In order to completely delete a project from the dashboard, you must first delete all the time slips associated to that particular project. Only then will you have the option of deleting the project in the project editing box: