Same problem, here's what I did:
MacOS
Click on the "Forms" icon at the top of Turbo Tax. That opened the blue side window to the left. I went to the 1099 B worksheet. (mine was at the top of the blue window). I highlighted it by clicking on it. Then I went to the top of the info bar on the desktop [Turbo Tax File Edit Forms Easy Step Flags Windows Help] and clicked on Forms there. Click on "Remove Form". This deleted the entire worksheet.
Definitely agree that what is the purpose of the trash can icon since that has been how you delete things from the time of Steve Job's garage. 2024 Turbo Tax is a disappointment for sure.
