IntelFsp2Pkg/BaseFspPlatformLib: Remove unused PCDs

The PCDs below are unused, so they have been removed from inf.
gIntelFsp2PkgTokenSpaceGuid.PcdGlobalDataPointerAddress
gIntelFsp2PkgTokenSpaceGuid.PcdTemporaryRamBase
gIntelFsp2PkgTokenSpaceGuid.PcdTemporaryRamSize
gIntelFsp2PkgTokenSpaceGuid.PcdFspTemporaryRamSize
gIntelFsp2PkgTokenSpaceGuid.PcdFspMaxPatchEntry
gIntelFsp2PkgTokenSpaceGuid.PcdFspMaxPerfEntry

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: shenglei <shenglei.zhang@intel.com>
Reviewed-by: Chasel Chiu <chasel.chiu@intel.com>