chore: remove duplicate provider definition (#3917)

# What does this PR do?

Files was present twice.

Signed-off-by: Sébastien Han <seb@redhat.com>

benchmarking/k8s-benchmark/stack-configmap.yaml

@@ -44,14 +44,6 @@ data:
             db: ${env.POSTGRES_DB:=llamastack}
             user: ${env.POSTGRES_USER:=llamastack}
             password: ${env.POSTGRES_PASSWORD:=llamastack}
-      files:
-      - provider_id: meta-reference-files
-        provider_type: inline::localfs
-        config:
-          storage_dir: ${env.FILES_STORAGE_DIR:=~/.llama/distributions/starter/files}
-          metadata_store:
-            type: sqlite
-            db_path: ${env.SQLITE_STORE_DIR:=~/.llama/distributions/starter}/files_metadata.db
       safety:
       - provider_id: llama-guard
         provider_type: inline::llama-guard