Go to Forms on the upper right to look for the k-1 on the left in the list of forms in your return.  Click on it to Delete ti.  If it doesn't seem to be in that list, go to the box above that says Open Forms.  Type k-1 in the box asking which form, choose the one from below that applies click on it to bring it up, scroll down to delete it.

Lastly, when you are put down in the nonexistent k-1 interview, you should be able to use the Back button to come to a summary showing this form and can delete it from the summary.