How to delete one more noncommissioned officer from the national recruitment network?

No need to delete. If you are not a fresh graduate, it doesn't matter. If it does not meet the requirements, the People's Armed Forces Department will treat it as an error. If you are an ordinary soldier, it doesn't matter. After that, the school armed forces department will ask, you can say that you filled it in incorrectly. This is a small problem. It's okay.