the PyUtility is not used, so we remove it.
(re-add this patch since it be reverted in Python3 migration patches,
but this check is not related with Python3)
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>