[coreboot] FSP 1.0 Sandy-/Ivybridge removal

[Zaolin]

Hey coreboot folks,

I want to remove the old Sandy-/Ivybridge FSP 1.0 implementation from
the tree:

https://review.coreboot.org/#/c/coreboot/+/29402/

We already have an Open Source replacement for it ( under src/{nb,sb} )
which can replace the legacy FSP integration.

Does anyone use the FSP stuff or has complains about the current plan?

BR, Zaolin