Those Estimated Vouchers 1040-ES are Not Mandatory. They are Not sent to the IRS and are for your information only. TurboTax calculates those based on this years tax return. So, If you feel comfortable about not owing way too much next year then you can just Ignore those vouchers. Like I said the IRS does Not get a copy.
The issue is will you Owe less than $1,000 to the IRS in taxes Next Year. Please see this IRS Topic 306 http://www.irs.gov/taxtopics/tc306.html for a more in-depth answer.
Hope this helps.
