NX Release: 2206
The created parts are listed in the “History” tab in the “Resource” bar in Siemens NX. You can clear these parts on the history tab by clicking the right mouse button on the free area on the “History” panel and then clicking on the “Clear History” in the opening list as seen in the figure.
Also, you can remove a selected part from the History panel. To remove a part from the history list, click the right mouse button on the part preview icon in the History” tab then click “Remove” on the opening list.