UefiCpuPkg PiSmmCpuDxeSmm: Use new EfiLocateFirstAcpiTable()

https://bugzilla.tianocore.org/show_bug.cgi?id=967
Request to add a library function for GetAcpiTable() in order
to get ACPI table using signature as input.

After evaluation, we found there are many duplicated code to
find ACPI table by signature in different modules.

This patch updates PiSmmCpuDxeSmm to use new
EfiLocateFirstAcpiTable() and remove the duplicated code.

Cc: Younas khan <pmdyounaskhan786@gmail.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfileInternal.h

@@ -1,7 +1,7 @@
 /** @file
 SMM profile internal header file.
 
-Copyright (c) 2012 - 2017, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2012 - 2018, Intel Corporation. All rights reserved.<BR>
 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
@@ -15,7 +15,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #ifndef _SMM_PROFILE_INTERNAL_H_
 #define _SMM_PROFILE_INTERNAL_H_
 
-#include <Guid/Acpi.h>
 #include <Protocol/SmmReadyToLock.h>
 #include <Library/UefiRuntimeServicesTableLib.h>
 #include <Library/DxeServicesTableLib.h>