Vlv2TbltDevicePkg/MultiPlatformLib: Remove the unused variables

Vlv2TbltDevicePkg/MultiPlatformLib: Remove the unused variables

Fix the following errors from gcc:

Vlv2TbltDevicePkg/Library/MultiPlatformLib/MultiPlatformLib.c: In function ?MultiPlatformInfoInit?:
Vlv2TbltDevicePkg/Library/MultiPlatformLib/MultiPlatformLib.c:47:14: error: variable ?Status? set but not used [-Werror=unused-but-set-variable]

Vlv2TbltDevicePkg/Library/MultiPlatformLib/BoardClkGens/BoardClkGens.c: In function ?ReadClockGeneratorID?:
Vlv2TbltDevicePkg/Library/MultiPlatformLib/BoardClkGens/BoardClkGens.c:222:33: error: variable ?Status? set but not used [-Werror=unused-but-set-variable]

Vlv2TbltDevicePkg/Library/MultiPlatformLib/BoardClkGens/BoardClkGens.c: In function ?ConfigurePlatformClocks?:
Vlv2TbltDevicePkg/Library/MultiPlatformLib/BoardClkGens/BoardClkGens.c:283:33: error: variable ?ClockGenID? set but not used [-Werror=unused-but-set-variable]

Also fix the coding style of MultiPlatformInfoInit()

Cc: David Wei <david.wei@intel.com>
Cc: "Wu, Hao A" <hao.a.wu@intel.com>
Cc: "Lu, ShifeiX A" <shifeix.a.lu@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>