UefiCpuPkg: Revert "UefiCpuPkg: Enable Tdx support in MpInitLib"

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3918

This reverts commit 88da06ca76.
This commit triggers the ASSERT in Non-Td guest.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>

UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf

@@ -24,12 +24,10 @@
 [Sources.IA32]
   Ia32/AmdSev.c
   Ia32/MpFuncs.nasm
-  MpLibTdxNull.c
 
 [Sources.X64]
   X64/AmdSev.c
   X64/MpFuncs.nasm
-  MpLibTdx.c
 
 [Sources.common]
   AmdSev.c
@@ -38,7 +36,6 @@
   MpLib.c
   MpLib.h
   Microcode.c
-  MpIntelTdx.h
 
 [Packages]
   MdePkg/MdePkg.dec