Log in to the HTML5 client.
Select the Work workspace, Gantt tab.
Select a project in the Project Data Selector.
In the Main toolbar, click on the Edit () button to open the Project Administration dialog box.
Select the Team folder, Cost Items sub-tab.
OR, select the Administration workspace, Team tab.
Select a project in the Project Data Selector.
Select the Cost Items sub-tab.
Select the Cost Item you want to remove from the Project.
Click on the Delete () command.