Emma Bunton, Geri Halliwell, Mel B were set to reform Geri, alongside Mel B and Emma Bunton, sent fans into meltdown as they announced they would be reuniting the 90’s band as a trio named ‘GEM’. But now, it seems Ginger Spice has pulled out of the whole operation – to focus on her family. A source told The Sun: “Geri’s priorities have…