A top FDNY official says it’s “most definitely” acceptable to exclude a white firefighter from a ceremonial unit based solely on his skin color, The Post has learned. Cecilia Loving, the department’s chief diversity and inclusion officer, is defending a decision to kick Lt. Daniel McWilliams — one of three firefighters in the iconic 9/11 Ground Zero flag-raising photo — off a color-guard procession so it would be all-black. Loving testified at a state Divsion of Human Rights trial on McWilliam’s complaint that he was the victim of racial bias. When McWilliams showed up at a 2017 memorial mass to...