mips: Delete authors lists from mips files.

Change-Id: I56c054c64fe3d1e39ed5d315b8ac78de2e993dc5
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/25449
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Gabe Black <gabeblack@google.com>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
77 files changed