Brian Steinberg Senior TV EditorDisney’s search for a new leader for ABC News continues weeks after the company unexpectedly disclosed the former president, James Goldston, would leave the post.Goldston’s last day came at the end of March and the company has yet to hone in on a candidate to replace him, according to four people familiar with parts of the search process. When ABC News heads like David Westin or Ben Sherwood left in years past, Disney identified a successor.