Hampton Creek&#x27;s entire board — except the CEO — just quit - Hampton Creek&#x27;s board of directors made a big, and very unusual, change recently: they all left.  All, that is, except for the CEO of the Silicon Valley startup best known for its egg-less mayo and some of the controversies that have clung to it.  The company confirmed the board change to Business Insider on Monday. Josh Tetrick, the CEO and now sole board member of Hampton Creek, said in an emailed statement that  the board changes…