Zayn Malik has made the difficult decision to postpone dates of his first-ever solo tour following the tragic news of Liam Payne’s death, it was the first tour the singer was set to embark on since 2015. The celebrity was planning to begin his Stairway to the Sky tour next week, from October 23, in the States, before heading over to the UK in November. However, following the heartbreaking news of Liam Payne’s sudden death, he has postponed the entire US leg. Zayn Malik informed fans of the news on Instagram after posting a tribute to his friend and former band member. Liam Payne passed away on…