UefiCpuPkg: Removing ipf which is no longer supported from edk2.

Removing rules for Ipf sources file:
* Remove the source file which path with "ipf" and also listed in
  [Sources.IPF] section of INF file.
* Remove the source file which listed in [Components.IPF] section
  of DSC file and not listed in any other [Components] section.
* Remove the embedded Ipf code for MDE_CPU_IPF.

Removing rules for Inf file:
* Remove IPF from VALID_ARCHITECTURES comments.
* Remove DXE_SAL_DRIVER from LIBRARY_CLASS in [Defines] section.
* Remove the INF which only listed in [Components.IPF] section in DSC.
* Remove statements from [BuildOptions] that provide IPF specific flags.
* Remove any IPF sepcific sections.

Removing rules for Dec file:
* Remove [Includes.IPF] section from Dec.

Removing rules for Dsc file:
* Remove IPF from SUPPORTED_ARCHITECTURES in [Defines] section of DSC.
* Remove any IPF specific sections.
* Remove statements from [BuildOptions] that provide IPF specific flags.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chen A Chen <chen.a.chen@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>

UefiCpuPkg/Library/SecPeiDxeTimerLibUefiCpu/SecPeiDxeTimerLibUefiCpu.inf

@@ -36,16 +36,12 @@
 
 
 #
-#  VALID_ARCHITECTURES           = IA32 X64 IPF
+#  VALID_ARCHITECTURES           = IA32 X64
 #
 
 [Sources.Ia32, Sources.X64]
   X86TimerLib.c
 
-[Sources.IPF]
-  IpfTimerLib.c
-
-
 [Packages]
   MdePkg/MdePkg.dec
   UefiCpuPkg/UefiCpuPkg.dec
@@ -58,10 +54,6 @@
   DebugLib
   LocalApicLib
 
-[LibraryClasses.IPF]
-  PalLib
-
-
 [Pcd.IA32, Pcd.X64]
   gEfiMdePkgTokenSpaceGuid.PcdFSBClock  ## SOMETIMES_CONSUMES