In 2016, I reported a small amount of income (about $550) that I received from an independent contracting job that I did for one company on a Schedule C. I did not receive a 1099 from the company I did the work for. In 2017, I received no contracting income and had no expenses. My only income was reported on a W2. Do I need to include a Schedule C this year or can I delete the transferred documents?