OvmfPkg/PlatformPei: Remove redundant reference of framework pkg DEC

OvmfPkg/PlatformPei: Remove redundant reference of framework pkg DEC

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1843

For the driver's INF file, this commit will remove the redundant reference
to 'IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec'.

Cc: Ray Ni <ray.ni@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>