If you have not already filed, you can remove a W-2 by following the steps below. Otherwise, you will have to file an amended return.
If you need to remove a W-2:
1. Go to "Federal Taxes" at the top of the screen
2. Select the "Wages & Income" sub-tab
3. Select "Start/Revisit" next to "Wages and Salaries"
4. Select "Delete" next to the W-2 you would like to remove