ABC says Nicollette Sheridan is leaving “Desperate Housewives.”The 45-year-old Sheridan plays vamp Edie Britt on the comedy-drama about domestic life on Wisteria Lane. The network did not say Wednesday when Sheridan’s role would end. Her departure was first made public by TV Guide magazine. A call to Sheridan’s publicist was not immediately returned. “Desperate Housewives,” a top 20 show and one of ABC’s most successful series, stars Teri Hatcher, Felicity Huffman, Marcia Cross and Eva Longoria Parker.