New Delhi: Kathak legend Pandit Birju Maharaj died at his home in Delhi late Sunday after suffering a heart attack. He was 83. Birju Maharaj was from Lucknow’s Kalka-Bindadin Gharana. He is survived by three daughters, two sons and five grandchildren. A recipient Padma Vibhushan, he was fondly called Panditji or Maharajji by his disciples…