I am using TT 2020 on Mac, the form 3554 is hidden, so here is how I remove form 3554:
Step 1. Click on the "Forms" button to see all the forms
Step 2. Locate the first form under "California Forms" (or your state forms), my first form is "Form 540", then click on the left arrow above the form, it will show you the form 3554.
Step 3. The form 3554 still does not show in the form list, so I have to enter some text in the form 3554, then it will show up in the left panel.
Step 4. Press "delete" key to delete the form!
I hope this helps! I think this is a bug!
