By Andrew Holleran The Coach K era is officially over. With Duke losing to UNC in the Final Four on Saturday night, Mike Krzyzewski has coached his final college basketball game. Coach K finishes his career with two straight losses to UNC – one in his final home game at Cameron Indoor Stadium and one in the national semifinals. Following UNC’s huge win over Duke, longtime ESPN college basketball analyst Dick Vitale took to social media. Vitale has made it clear that he believes Coach K is the greatest college basketball coach of all-time. The GOAT won’t be ending his career with a national tit…