For Itanium platform, the switch CAR action has been moved to SecCore according to PI specification, so I clean up the PeiCore to remove stack related code.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4803 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/Pei/Dispatcher/Stack.c

@@ -1,55 +0,0 @@
-/** @file
-  PeiSwitchStacks() function for PEI dispatcher.
-
-  Copyright (c) 2006, Intel Corporation<BR>
-  All rights reserved. This program and the accompanying materials
-  are licensed and made available under the terms and conditions of the BSD License
-  which accompanies this distribution.  The full text of the license may be found at
-  http://opensource.org/licenses/bsd-license.php
-
-  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-  Module Name:  String.c
-
-**/
-
-//
-// Include common header file for this module.
-//
-#include <PeiMain.h>
-
-/**
-  Transfers control to a function starting with a new stack.
-
-  Transfers control to the function specified by EntryPoint using the new stack
-  specified by NewStack and passing in the parameters specified by Context1 and
-  Context2. Context1 and Context2 are optional and may be NULL. The function
-  EntryPoint must never return.
-
-  If EntryPoint is NULL, then ASSERT().
-  If NewStack is NULL, then ASSERT().
-
-  @param  EntryPoint  A pointer to function to call with the new stack.
-  @param  Context1    A pointer to the context to pass into the EntryPoint
-                      function.
-  @param  Context2    A pointer to the context to pass into the EntryPoint
-                      function.
-  @param  NewStack    A pointer to the new stack to use for the EntryPoint
-                      function.
-  @param  NewBsp      A pointer to the new BSP for the EntryPoint on IPF. It's
-                      Reserved on other architectures.
-
-**/
-VOID
-EFIAPI
-PeiSwitchStacks (
-  IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,
-  IN      VOID                      *Context1,  OPTIONAL
-  IN      VOID                      *Context2,  OPTIONAL
-  IN      VOID                      *NewStack,
-  IN      VOID                      *NewBsp
-  )
-{
-  SwitchStack (EntryPoint, Context1, Context2, NewStack);
-}