Nikki Bella’s ringless wedding band finger is sending a glaring message about the state of her and Artem Chigvintsev’s marriage. Radaronline.com can confirm the former WWE wrestler was spotted boarding a private plane sans the wedding band just two days after Chigvintsev was arrested on a domestic violence charge. In the photos, Bella shot the paparazzi a smile as she boarded the plane Saturday. The mother of one sported a form-fitting, long-sleeve cocoa brown scoop neck top with high-waisted jeans and a baseball cap. As she toted a black bag full of travel needs, the 40-year-old’s ring finger…