Thank you for visiting the QuickBooks Community. Please know that we aim to deliver customer satisfaction at all times that's why we fix an issue as soon as possible. With that, may I ask for additional information on which part you're referring to delete or remove frequently used business purposes? I appreciate any further details so I can present an accurate solution.
Additionally, please refer to this article to see different details on how Quickbooks Self Employed is designed to help you record your self-employed income and expenses, track mileage, and prepare your Schedule C: QuickBooks Self-Employed Overview.
Feel free to leave a comment below and provide further details about your concern. I'll be happy to help you further. Have a great day.