Revert "OvmfPkg: link SM3 support into Tcg2Pei and Tcg2Dxe"

Revert "OvmfPkg: link SM3 support into Tcg2Pei and Tcg2Dxe"

This reverts commit a7c7d21ffa9ad14b418e728a882df0a9b8815bf6.

The reason is that said commit had not been reviewed by OvmfPkg
maintainers/reviewers, before it was pushed.

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Imran Desai <imran.desai@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Stefan Berger <stefanb@linux.ibm.com>
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>