misc: Remove 'run-name' from workflow yaml files

This field is not necessary and was not a helpful description of the
run.

Change-Id: I078481920833fb36099e6c30295c0b60ac0ee3a0
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/71505
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
3 files changed