Martha Stewart is resigning from the board of Revlon Inc. after nearly eight years as a director of the cosmetics company, a Revlon spokeswoman said on Monday.Spokeswoman Catherine Fisher declined to provide more details, including the effective date of the resignation. Ms. Stewart, convicted last week of lying about a suspicious stock trade, has been a Revlon director since June 1996.In Revlon’s “Code of Business Conduct,” dated December 2003, the first of 16 items listed is p...