Vlv2TbltDevicePkg/VlvPlatformInitDxe: Remove unused variables
Vlv2TbltDevicePkg/VlvPlatformInitDxe: Remove unused variables

Fix the following errors from gcc:

Vlv2TbltDevicePkg/VlvPlatformInitDxe/IgdOpRegion.c: In function ?GetIntegratedIntelVbtPtr?:
Vlv2TbltDevicePkg/VlvPlatformInitDxe/IgdOpRegion.c:145:33: error: variable ?VbtSize? set but not used [-Werror=unused-but-set-variable]

Vlv2TbltDevicePkg/VlvPlatformInitDxe/IgdOpRegion.c: In function ?JudgeHandleIsPCIDevice?:
Vlv2TbltDevicePkg/VlvPlatformInitDxe/IgdOpRegion.c:418:22: error: variable ?DevicePath? set but not used [-Werror=unused-but-set-variable]

Cc: David Wei <b5f26b2a2cdf37ab487a7004176f1783629975b0@intel.com>
Cc: "Wu, Hao A" <f387b71200577e27ccf5abb090fda0ddd187ec6e@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gary Lin <a057d4b27e9e9055b973f54b519db54c22ed5ee8@suse.com>
Reviewed-by: David Wei <b5f26b2a2cdf37ab487a7004176f1783629975b0@intel.com>

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