GameStop CEO Ryan Cohen might be ready to pull the plug on his ambitious plan to purchase eBay for $56 billion, a new report claims. Cohen–who came up with the plan while seated on his porcelain throne–had been pursuing the deal ever since it was announced, but eBay rejected the offer, saying it was “neither credible nor attractive.” According to Bloomberg, Cohen is now considering a different strategy that would revolve around a partnership between eBay and GameStop to sell more collectible items like trading…