By Alan Johnson A petition to remove an offensive Ricky Gervais skit from Netflix has been signed by more than 4,000 backers in the wake of comments the comedian made about terminally-ill children. Speaking in his new stand-up show special, Armageddon, Gervais jokes that he refers to kids battling serious conditions in hospital as “baldies” and asks why those granted a wish by the Make-A-Wish Foundation don’t simply “wish to get better”. It prompted the parent of a child with cancer to take action over the 62-year old’s “hurtful” and “disrespectful” remarks. Petition starter Sess Cova said: “I…