[LinuxBIOS] [PATCH] Drop microcode references from Via CPUs

[Corey Osgood]

Via C3 datasheets don't make any mention of microcode updates, and the
C7 bios programmer's guide explicitly states they're not necessary, and
leaves it at that. Even if they are possible and exist, we don't have
any info on it, nor any updates, so drop these unneeded references.

Signed-off-by: Corey Osgood