You can delete projects in the app.
Important: Only project owners can delete projects.
To delete a project:
  1. Open the projects panel and pick a project
  2. In the project, click in the upper right corner
  3. Select About the project. The project card will open
  4. Tap "Delete project" at the bottom of the screen
  5. Press "Save" after you're done making changes
A deleted project can be restored within 30 days via the web portal.