Although the deduction is no longer allowed at the federal level, you will enter the investment fees in the federal portion of your tax return.
Here is now to enter in TurboTax Online:
Federal
Deductions & Credits
Scroll to Other Deductions & Credits
Select Other Deductible Expenses
To enter in TurboTax CD/Download:
Personal
Deductions & Credit
Scroll to Retirement & Investments
Select Other Investment Expenses