I don’t think with your GPA that you will need to submit test scores. It doesn’t hurt you to not submit them, it only helps you if you do and they are representative of your abilities. Some people aren’t good standardized test takers but have very high GPA’s. In those cases, their GPA is representative of their abilities but the test scores may not be.
In your case, a 1200 is below the 50% for admitted freshman, but with your GPA I don’t think it will matter much. For reference, my daughter has a 3.9 GPA and did not submit test scores because the only ones available were from sophomore year and were in no way representative of her achievements.
If I were you, I’d submit the application without the test scores. But you have to decide for yourself.