UefiCpuPkg: Remove unneeded MpService2Ppi assignment

Remove the unneeded assignment of MpService2Ppi field
in SmmS3ResumeState. Previously, when the execution
combination of PEI and DXE are the same, the pointer
of mpservice ppi will be passed to CpuS3.c in smm cpu
driver to wakeup all APs, instead of init-sipi-sipi.
Currently, CpuS3.c doesn't need to wakeup Aps anymore.
So remove the duplicated mpservice locate and assignment
to MpService2Ppi field in SmmS3ResumeState.

Signed-off-by: Dun Tan <[email protected]>
Reviewed-by: Ray Ni <[email protected]>
Cc: Rahul Kumar <[email protected]>
Cc: Gerd Hoffmann <[email protected]>
Reviewed-by: Jiaxin Wu <[email protected]>

UefiCpuPkg/Universal/Acpi/S3Resume2Pei/S3Resume.c

@@ -1152,7 +1152,6 @@ S3RestoreConfig2 (
     SmmS3ResumeState->ReturnContext1     = (EFI_PHYSICAL_ADDRESS)(UINTN)AcpiS3Context;
     SmmS3ResumeState->ReturnContext2     = (EFI_PHYSICAL_ADDRESS)(UINTN)EfiBootScriptExecutorVariable;
     SmmS3ResumeState->ReturnStackPointer = (EFI_PHYSICAL_ADDRESS)STACK_ALIGN_DOWN (&Status);
-    SmmS3ResumeState->MpService2Ppi      = 0;
 
     DEBUG ((DEBUG_INFO, "SMM S3 Signature                = %x\n", SmmS3ResumeState->Signature));
     DEBUG ((DEBUG_INFO, "SMM S3 Stack Base               = %x\n", SmmS3ResumeState->SmmS3StackBase));
@@ -1181,19 +1180,6 @@ S3RestoreConfig2 (
     if (((SmmS3ResumeState->Signature == SMM_S3_RESUME_SMM_32) && (sizeof (UINTN) == sizeof (UINT32))) ||
         ((SmmS3ResumeState->Signature == SMM_S3_RESUME_SMM_64) && (sizeof (UINTN) == sizeof (UINT64))))
     {
-      //
-      // Get MP Services2 Ppi to pass it to Smm S3.
-      //
-      Status = PeiServicesLocatePpi (
-                 &gEdkiiPeiMpServices2PpiGuid,
-                 0,
-                 NULL,
-                 (VOID **)&MpService2Ppi
-                 );
-      ASSERT_EFI_ERROR (Status);
-      SmmS3ResumeState->MpService2Ppi = (EFI_PHYSICAL_ADDRESS)(UINTN)MpService2Ppi;
-      DEBUG ((DEBUG_INFO, "SMM S3 MpService2Ppi Point = %lx\n", SmmS3ResumeState->MpService2Ppi));
-
       SwitchStack (
         (SWITCH_STACK_ENTRY_POINT)(UINTN)SmmS3ResumeState->SmmS3ResumeEntryPoint,
         (VOID *)AcpiS3Context,