I don't need to file 1040. But the turbotax keeps saying I have schedule 1, additional income and adjustments to income (which I don't have). How can I delete these?

Everyone who is filing a 2019 tax return is using a Form 1040 and has been since 2018 returns.

https://ttlc.intuit.com/questions/4511011-what-happened-to-the-1040a-and-1040ez

The tax forms for 2019 include a Form 1040 and three possible extra “Schedules”:

https://www.irs.gov/pub/irs-pdf/f1040.pdf 

https://www.irs.gov/pub/irs-pdf/f1040s1.pdf

https://www.irs.gov/pub/irs-pdf/f1040s2.pdf 

https://www.irs.gov/pub/irs-pdf/f1040s3.pdf 

WHY DO I HAVE TO PAY?  I WANT THE FREE EDITION

The information that you can enter in Free Edition is pretty limited now.  Thanks to the new tax laws that began for 2018 returns, there are no more simple Form 1040EZ or 1040A's.  Everything goes on a Form 1040 that has three extra "schedules" with it, and if you need any of those schedules, you are not able to use the Free Edition.  Using the standard deduction instead of itemizing does NOT mean you will not need any of those schedules.

https://www.irs.gov/forms-pubs/about-form-1040 

If you qualify to use it, there is another full-featured free version of the software:

Try Free File: 

You qualify if your income was $36,000 or less, or $69,000 or less if active duty military, or if you qualify for Earned Income Credit

https://ttlc.intuit.com/questions/1900583-what-is-turbotax-free-file-program

• https://ttlc.intuit.com/questions/2026912-how-do-i-switch-to-turbotax-free-file-program

If you switch to Free File you must create a new account and new user ID.

Note:  If you do not qualify to use Free File then you will have to upgrade to Deluxe or higher in the paid versions of the software.