No, he is still considered as a saint but was removed from the official Calendar of Saints in 1969 because of the lack of evidence of his life as a man of heroic virtue. He is no longer commemorated by the Universal Church but his cult is still allowed on a local basis.
I do not know why Christopher is liked by athletes since he is not the patron saint of athletes. St. Sebastian holds that position. Christopher is a figure of legend who may have never existed.
St. Christopher is a saint in both the Catholic and Orthodox traditions.
St. Christopher was a person while St. Michael is an angel.
No, Santa derives from St. Nicholas of Myra, not St. Christopher.
St. Christopher was never a bishop.
The only saint recognized by the Catholic Church as the patron saint of athletes and athletics is St. Sebastian. See this link for confirmation of this.
St. Christopher is the patron saint of travel. He is also believed to represent strength on your journey. St. Christopher is said to be one of the most famous of all saints.
If St. Christopher actually did exisit it was in the third century. He is mostly a saint of legend.
Christopher is not the patron saint of hockey. There are no patrons of individual sports. St. Sebastian is the patron saint of athletics and athletes in general. (as per Patron Saint Index)
St. Peter - St. Peter's Basilica in the Vatican.
Christoper Columbus is not a saint. St. Christopher, by legend, carried a child across a river. The child later revealed himself as Christ. In that way, St. Christopher became the patron saint of travelers. The real St. Christopher may have lived during the 4th century, B.C.
St. Christopher was neither beatified nor canonized.