See this TurboTax support FAQ for removing Max benefits (includes Audit Defense) - https://ttlc.intuit.com/community/downgrading/help/can-i-remove-max/01/26691
Or if you are a California resident, see this TurboTax support FAQ for removing Premium services (includes Audit Defense) - https://ttlc.intuit.com/community/downgrading/help/how-do-i-remove-premium-services/01/26266
