Revert back the change. For now, ECP only support build mode with EFI_SPECIFICATION_VERSION = 0x00020000 and PI_SPECIFICATION_VERSION = 0x00000009.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5959 6f19259b-4bc3-4df7-8a09-765794883524
3 files changed