Dole Food Co. has decided to cease coffee farming on Oahu and lay off nine employees on Nov. 30 amid an effort to sell the 154-acre Waialua Estate farm. The decision follows the company’s July sale of a nearby 151-acre cacao orchard, and a commitment to continue growing pineapple on roughly 2,700 acres above Oahu’s North Shore. “We’re not going to continue to run the coffee business,” Dan Nellis, Dole’s general manager for Hawaii, said Monday. “…