These protocols are no longer supported, either because they are not representative of GPU protocols, or because the have not been updated to work with GCN3. Change-Id: I989eeb6826c69225766aaab209302fe638b22719 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34197 Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com> Maintainer: Matt Sinclair <mattdsinclair@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>