The Readme.txt contains instructions about how to integrate Shell into Nt32. Actually Nt32 already contains a macro USE_OLD_SHELL to choose OLD or NEW Shell. So remove this txt file. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>