The Volkswagen camper van that Dr. Jack Kevorkian used during his assisted-suicide campaign is no longer for sale on eBay after the online auctioneer cited a policy against “murderabilia.” The owner, Jack Finn, put the van up for auction last week. The top bid was $3,400 at 12:30 p.m. Monday, with three days left in the auction. The company sent an e-mail message about the policy to Mr. Finn to explain why it pulled the listing. He said he would sell the van through another auction company.