stdlib,configs: Remove setting resource_directory in examples

As part of https://gem5-review.googlesource.com/c/public/gem5/+/51369
we have a default resource directory. We therefore no longer need to set
`resource_directory` to get a consistent download location.

Change-Id: I0bef9930db9157a999dc063bd49377de1fe75102
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/51950
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
2 files changed