gitlab: Remove temporary storage url from all stacks (#29949)

Gitlab pipelines run for spack already have other S3 storage locations
configured for storage of binaries, so this PR removes the redundant
per-pipeline mirror.  As a result, the "cleanup" jobs will no longer be
generated at the end of each pipeline, removing one possible point of
pipeline failure.

share/spack/gitlab/cloud_pipelines/stacks/data-vis-sdk/spack.yaml

@@ -134,15 +134,12 @@ spack:
             KUBERNETES_CPU_REQUEST: "500m"
             KUBERNETES_MEMORY_REQUEST: "500M"
 
-
       - match: ['@:']
         runner-attributes:
           tags: ["spack", "public", "x86_64"]
           variables:
             CI_JOB_SIZE: "default"
 
-
-    temporary-storage-url-prefix: "s3://spack-binaries-prs/pipeline-storage"
     broken-specs-url: "s3://spack-binaries-develop/broken-specs"
     service-job-attributes:
       image: { "name": "ghcr.io/spack/e4s-ubuntu-18.04:v2021-10-18", "entrypoint": [""] }