To delete a project from the project suite:
Right-click the project in the Project Explorer panel and then click Remove.
TestComplete will prompt you to specify whether you want to remove the project from the project suite (but keep the project files), or whether you want to delete all of the project files from the disk completely.
Click Remove to remove the project from the project suite.
Click Delete to remove the project with all its files from the disk completely. This action cannot be undone.