Revert "SecurityPkg: introduce the SM3 digest algorithm"

Revert "SecurityPkg: introduce the SM3 digest algorithm"

This reverts commit 06dd5863b66edd9908834371e07fb4e11383c172.

The reason is that said commit directly depends on commit 49c1e683c452
("MdePkg/Protocol/Hash: introduce GUID for SM3", 2019-07-03), and the
latter commit is going to be reverted, due to its review process not
having followed established edk2 norms.

Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Imran Desai <imran.desai@intel.com>
Cc: Jian Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1781
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>