Once skin has grown around that tunnel where the piercing was and had years to settle, it won't close on its own. The good news is that if you truly want it closed, visit a local Plastic Surgeon. Your surgeon can talk to you about how to best repair the hole, and it almost certainly can be done in the office for a modest fee.
Skin cells have grown along the tract of the piercing so it is not likely to close at this point . It could be removed with a tiny circular scalpel called a punch biopsy used for removing small skin lesions .