Go into the FORMS View. bring up the empty form in the Software window. The bottom left of that window where the form is will be a delete option. Delete and all gone
Here's the general procedure for viewing the forms list and deleting unwanted forms, schedules, and worksheets in TurboTax Online:
Tips and tricks
I was able to delete the 1099R per your instructions. Husband has no 1099r's and spouse has two. TT brings up the 1099r worksheet for my husband. How to delete his form and go to mine? TT wants his form filled out and I can't get past his form to continue with the return.