TurboTax is trying to help you get an education credit that will reduce your taxes. Here's a TurboTax article with more information about these credits.
Sometimes the credit is not worth the upgrade fee. In this case, you should either answer "no" to being a student or remove the 1098-T.
To clear the calculations, try deleting the 1098-T form.
How do I view and delete forms in TurboTax Online?
Open or continue your return in TurboTax.
In the left menu, select Tax Tools and then Tools.
In the pop-up window Tool Center, choose Delete a form.
Select Delete next to the form/schedule/worksheet in the list and follow the instructions.
You can also education credits in the search box. Jump to the education credits and delete the information.