How can I remove a w2 form that was added by accident?

To delete a W-2 from your return, please follow these steps below:·        

• Sign in to TurboTax (if you're not already signed in).
• Click on the Take me to my return button
• Click on the Federal Taxes tab 
• Click on the Wages and Income tab
• Scroll down to the Wages and Salaries section and select Start/Revisit
• Select Delete (trashcan icon) on the line listing the W-2 that is no longer applicable. 
• Select Yes on "Are you sure you want to delete this W-2?" (See image below)

or you can delete your W-2 form, by completing these steps instead:

• Sign in to TurboTax (if you're not already signed in)
• Click on the Take me to my return button
• Select Tax Tools> then, Tools (lower left side bar).
• Select Tool Center, choose Delete a form.
• Select Delete next to the W-2 form and follow the onscreen instructions. (See image below)