You could try logging out of the program, and clearing your cache and cookies and logging back in, to see if that will correct the issue.
Make sure all updates have been made to your TurboTax program.
You may also try using another browser.
If you are using TurboTax Online, did you try going to "Tax Tools" then "Tools" and under "Other Helpful Links" select "Delete a Form." This will bring up a list of all of your forms and you can click on "Delete" next to the form you want to delete.
If you want to preview your tax return to see if that entry has been deleted, you can do the following:
For TurboTax desktop:
For TurboTax Online as follows:
Click here for How Do I View and Delete Forms in TurboTax Online.