configs: Remove mentions of alpha from the configs.

Change-Id: I09117b52c0c87679eaa72dbb79545dd1e77732b1
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/24647
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
5 files changed