publishing_stable: remove bad buildkitd-config value (#3369)

Signed-off-by: Mitchell <[email protected]>

Author: mitchdz

.github/workflows/publishing_stable.yml

@@ -117,7 +117,6 @@ jobs:
         uses: docker/setup-buildx-action@v3
         with:
           version: v0.19.0
-          buildkitd-config: none # hard-coded to run on ubuntu-latest
           driver-opts: |
             image=moby/buildkit:v0.19.0