You received a deduction on your tax return for that contribution. That means you have already received the tax savings. If you withdraw it for non-medical purposes (non-qualified distribution), it will be taxable because you already deducted it on your tax return.
The 'net result' would be zero income tax (previous deduction, now currently taxable), but you would also pay a penalty for a non-qualified distribution (payment for something other than medical expenses).
