Vlv2TbltDevicePkg/SmBiosMiscDxe: Remove unused variables

Vlv2TbltDevicePkg/SmBiosMiscDxe: Remove unused variables

Fix the following errors from gcc:

Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscOemType0x90Function.c: In function ?JudgeHandleIsPCIDevice?:
Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscOemType0x90Function.c:164:22: error: variable ?DevicePath? set but not used [-Werror=unused-but-set-variable]

Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscOemType0x90Function.c: In function ?AddSmbiosT0x90Callback?:
Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscOemType0x90Function.c:292:28: error: variable ?ForType90InputData? set but not used [-Werror=unused-but-set-variable]

Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscProcessorInformationFunction.c: In function ?MiscProcessorInformationFunction?:
Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscProcessorInformationFunction.c:191:37: error: variable ?SrcDataSize? set but not used [-Werror=unused-but-set-variable]

Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscProcessorCacheFunction.c: In function ?MiscProcessorCacheFunction?:
Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscProcessorCacheFunction.c:78:34: error: variable ?SrcDataSize? set but not used [-Werror=unused-but-set-variable]

Cc: David Wei <david.wei@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: David Wei <david.wei@intel.com>