Deductions & credits
If you deleted Form 2106 in FORMS mode, the 'Needs Review' should go away. This display does not affect your tax return, though, it's just in TurboTax.
Try clicking UPDATE, then say YES to 'did you have any employment expenses related to W-2 work?', answering NO to the follow-up questions, (and deleting any amounts), until you reach 'It turns out your expenses don't qualify for this deduction'.
Then go back to Deductions & Credits and the 'needs review' should be gone.
Here's more info on Employee Expenses.
