By Alan Johnson & Mia O’Hare BBC Breakfast’s Nina Warhurst has said ‘enough is enough’ and quit social media. The BBC presenter has decided to take a break from social media as she shared a message to her followers. She came back to the show in January after being away on maternity leave. Nina, 43, has admitted she feels too busy for Instagram because she’s looking after her little girl, Nancy, with her husband Ed Fraser. She made one last post on Thursday morning (March 29) to say goodbye for a bit. The TV star told her followers goodbye with a cute photo of her carrying her baby in the kitch…