retire FvbServiceLib class in MdeModulePkg, and also remove the two instances in MdeModulePkg and ItaniumPlatformPkg.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7837 6f19259b-4bc3-4df7-8a09-765794883524
7 files changed