Fisher should step downOTTAWA (CP) - Doug Fisher should resign as chairman of Hockey Canada for urging that the Canadian Amateur Hockey Association be removed from any Involvement In international hockey, Gordon Renwick, president of the CAHA, said Tuesday.Renwick said in a statement he was shocked by the comments of Fisher and Alan Eagleson, a member of the Hockey Canada board and director of the National Hockey League Players Association, to a special Com-nions-Senale committee.Fisher told the committee, which is studying Canada's role in international hockey, that the CAHA has been hostile to Hockey Canada mandated by the government to represent Canada in international hockey dealings.