To delete a Search environment that is attached to a project:
On the Projects tab, go to Projects > Your Project > environments.
Click the remove () icon for the environment you want to delete.
In the dialog box, select Delete Environment.
Click OK.
To delete an unattached Search environment:
On the Projects tab, go to Environments.
Click the remove () icon for the environment you want to delete.
Click OK.
Note: Information relating to deleted environments may still appear in Search reports; however, the only identifying information for a deleted environment is the repository ID.