How do I get the Turbo Tax question about a K1 from Compass Diversified to go away? I have no transactions in 2019 from this company, have had none for 3 years.

You can delete the K-1 by following these steps:

TurboTax Online

1. Click on Federal > Income & Expenses
2. Under S-corps, Partnerships, and Trusts click on the Revisit box next to Schedule K-1.
3. On the Tell Us About Your Schedules K-1 screen.  Click on the Start/Update box next to Partnerships/LLCs (Form 1065). 
4. You will see the Partnership/LLC K-1 Summary screen.  Click  Delete next to the K-1.

TurboTax Online

1. Click Federal taxes > Wages & Income
2. Under Business Items click the Start/Update box next to Schedules K-1/Q.
3. Click Yes on the next screen, Schedules K-1 or Q. 
4. On the Tell Us About Your Schedules K-1 screen.  Click on the Start/Update box next to Partnerships/LLCs (Form 1065). 
5. You will see the Partnership/LLC K-1 Summary screen.  Click  Delete next to the K-1.