No problem. You should be able to delete your student loan from a prior year in one of the following ways. Once you delete it, use the following steps to remove any debris that might be hiding in the background.
Clearing cache and cookies handles many issues that seem nonsensical on a regular basis.
Close your TurboTax return first.
Watch to be sure you are selecting 'all time' as example. Do not use selections like 'last hour' for those browsers that give you options.