Remove Resources or Roles from Projects

Use the Resources tab on the Project Properties dialog box to remove resources or roles from your project.

To remove resources or roles from a project

Select Project Properties from the application menu at the top left corner of the window.
The Project Properties dialog box opens.
Select the Resources tab.
A list of resources added to the project display in the Team Resources grid.
Select the resource record you want to remove from the project, and click Remove.
The selected team resource record is removed from the project and the resource's record is removed from the Team Resource grid.

More information: