Slowly but surely, investment bankers from New York to London are chipping away at the tens of billions of dollars in leveraged buyout debt that remains famously stuck on their balance sheets. As loan prices in the US and Europe stage a spirited rebound, global banks are managing to sell down small chunks of risky financing packages that powered debt-fueled acquisitions in the low-rate era. That’s no mean feat given the diminished investor appetite for the obligations just a month ago.