I started 2018 last year but due to complexity, I needed an accountant. Therefore, I cannot carry over '18 into '19. How can I delete 2018?

So I have used Turbo Tax for many years - all years 2017 and prior are fine.  

In 2018, I started with Turbo Tax but needed to hire an accountant.  

So now in 2019, it is trying to carry over 2018 - information which is no longer applicable.  I did not file 2018 with Turbo Tax - so I have to delete 18.