PcdSerialIoUartDebugEnable UPD is platform specific and should not be included in generic GenCfgOpt.py script. Remove this and platform DSC should control the default value instead. Cc: Jiewen Yao <Jiewen.yao@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Chasel Chiu <chasel.chiu@intel.com> Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>