util: Remove `util/stats` directory

This does not appear to be used, we are therefore removing it.

Change-Id: I7c99f2e9879efc467bb75e279c4ef3b92fb1aa68
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47025
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
13 files changed