Enter w-2 in the Search box located in the upper right of the program screen. Click on Jump to w-2. On the W-2 Summary screen delete the W-2 listed.
If there is no W-2 listed, then see if there is a W-2 shown in the Delete forms list and if there Delete the W-2.
Click on Tax Tools on the left side of the screen. Click on Tools. Click on Delete a form