If you have not filed, to delete the Schedule K-1 form in the TurboTax online version, here are the steps:
1. Sign into your account, select Take me to my return
2. On your left, Select Tax Tools / drop down menu
3. Select Tools
4. Under Other helpful links, choose Delete a form
5. Select Delete next to Schedule K-1 Form 1065 and Continue with My Return to proceed