Fans have been posting marked-up Canadian $5 banknotes in honour of Star Trek legend Leonard Nimoy who played Spock. Social media users have been posting up photos of the altered banknotes that actually feature a former prime minister of Canada, Sir Wilfrid Laurier, following the death of Mr Nimoy. The Bank of Canada has reportedly said it’s not illegal to deface these banknotes, according to a report by the Canadian Broadcasting Corporation (CBC), although there are laws that ban the reproduction of both sides of a current bill…