Activision Blizzard shareholders are asking for the resignation of CEO Bobby Kotick in a letter to the company’s board of directors.READ MORE: Sexual harassment claims, lawsuits, and several high profile departures – what’s going on with Activision Blizzard?The shareholders, who have a total of 4.8 million shares to their name, and are also calling for the board’s two longest serving directors, Brian Kelly and Robert Morgado, to retire by December 31.It comes after a report that said Kotick was