I'm not sure why this may have been generated for your return. But you should be able to delete the Schedule associated with the Child Tax Credit, which is Schedule 8812, from your return. I'm linking instructions below for deleting a form in TurboTax Online.
How do I view and delete forms in TurboTax Online?
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***