David 'Kochie' Koch jokingly 'snubbed' his replacement Matt Shirvington as he stepped on the set of Sunrise for the final time on Friday, after hosting the show for 21 years. In a cheeky dig at the moment Tracy Grimshaw awkwardly snubbed her ACA replacement Allison Langdon last year, Kochie pretended not to see Matt, 44, who is taking over the …