This year’s Azerbaijan, Singapore and Japanese Formula One Grands Prix have been cancelled due to the Covid-19 pandemic, organisers said on Friday.Formula One had already cancelled four other races, including the showcase Monaco Grand Prix in May, and published a revised and shortened provisional schedule due to start in Austria on July 5.“As a result of the ongoing challenges presented by Covid-19, we and our promoters in Azerbaijan, Singapore and Japan have taken the decision to cancel their…