By Avi Creditor It was going to take a shock from Viktoria Plzen to keep Barcelona alive, but Inter took care of business emphatically to go through to the last 16. Before Barcelona even kicks the ball at Camp Nou on Wednesday, it knows that its Champions League fate is already sealed. Inter Milan’s 4–0 win over Viktoria Plzen in one of the day’s early matches clinched the Italian side’s place in the last 16 and ensured that Barcelona will be dumped in to the Europa League’s knockout phase as a third-place group finisher behind Bayern and Inter. With Inter six points clear of Barcelona, Xavi’s…