SourceLevelDebugPkg: Remove UefiCpuLib from module INFs.

Because UefiCpuPkg/UefiCpuLib is merged to MdePkg/CpuLib, remove the
dependency of UefiCpuLib.

Cc: Hao A Wu <hao.a.wu@intel.com>
Acked-by: Hao A Wu <hao.a.wu@intel.com>
Signed-off-by: Yu Pu <yu.pu@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>

SourceLevelDebugPkg/SourceLevelDebugPkg.dsc

@@ -35,7 +35,6 @@
   IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
   SynchronizationLib|MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
   LocalApicLib|UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.inf
-  UefiCpuLib|UefiCpuPkg/Library/BaseUefiCpuLib/BaseUefiCpuLib.inf
   PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
   SerialPortLib|MdeModulePkg/Library/BaseSerialPortLib16550/BaseSerialPortLib16550.inf
   PeCoffExtraActionLib|SourceLevelDebugPkg/Library/PeCoffExtraActionLibDebug/PeCoffExtraActionLibDebug.inf