Coreboot*Pkg: Retire CorebootPayloadPkg and CorebootModulePkg

Coreboot*Pkg: Retire CorebootPayloadPkg and CorebootModulePkg

RFC: https://edk2.groups.io/g/devel/message/39126

Since UefiPayloadPkg in EDK2 supports Coreboot and Slim Bootloader,
and I don't receive any concerns for the RFC to remove CorebootModulePkg
and CorebootPayloadPkg from EDK2, here is the action patch to remove
CorebootPayloadPkg and CorebootModulePkg.

Signed-off-by: Guo Dong <guo.dong@intel.com>
Cc: Prince Agyeman <prince.agyeman@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Reviewed-by: Maurice Ma <maurice.ma@intel.com>