National Ballet of Canada says it’s cancelling its remaining 2020-’21 season “due to the ongoing uncertainty around the COVID-19 pandemic.”In August, the National Ballet announced the pandemic had forced the cancellation of its performances set for November and December, including its annual production of “The Nutcracker.”It later announced a virtual showcase, but still intended to proceed with its winter season in March of next year.However, the Toronto-based company now says it can no longer do that, since “a return to large gatherings in the near future is unlikely.” Ontario provides more details on allowing dance classes to resume in COVID-19 hot spots Artistic director Karen Kain and executive director Barry Hughson say the winter.