There is a place in the personal income section called "miscellaneous" or "miscellaneous other" income which is a catchall for any income that doesn't fit anywhere else.
It's the last option on the income index screen if I remember correctly -- NOT to be confused with the similar-sounding 1099-MISC "miscellaneous" income which contractors and freelancers get for non-employee income.
Anyhow you can report the interest in that catchall section and remove the 1099-INT
