You can access the Forms area of Turbo Tax Desk Top software. Use the "Window" above the Dependants icon to review individual forms and then clear and remove non used forms.
CLEARING A FORM IN TTD
In Forms, select "Edit" top left and hover over "forms" then choose "Clear Forms". This will clear all contents in the form. You can then follow the same procedure and choose "Closed unused forms", to remove this form from your tax return.
It is advisable to have a "Sample" tax return in Turbo Tax for testing various tax scenarios.