chore: remove unused datastore samples without region tags (GoogleCloudPlatform#4316)

* chore: remove unused datastore folder without region tags

* build: clean up dangling CI references to deleted datastore samples

* ci: temporarily restore datastore-functions.yaml to bypass zizmor

The datastore-functions samples and workflow were deleted in a previous commit. However, the Zizmor scanner fails with an 'invalid input' error when attempting to audit the deleted file from the PR diff. This commit restores a dummy workflow to unblock the CI pipeline until the scanning infrastructure is updated to ignore deleted files.

* chore: add missing Apache 2.0 copyright header to dummy workflow

* ci: add explicit permissions and trailing newline to satisfy CodeQL

---------

Co-authored-by: Jennifer Davis <sigje@google.com>

Author: angelcaamal

.github/config/nodejs.jsonc

@@ -80,7 +80,6 @@
     "cloud-sql/sqlserver/tedious", // (untested) TypeError: The "config.server" property is required and must be of type string.
     "compute", // GoogleError: The resource 'projects/long-door-651/zones/us-central1-a/disks/disk-from-pool-name' was not found
     "dataproc", // GoogleError: Error submitting create cluster request: Multiple validation errors
-    "datastore/functions", // [ERR_REQUIRE_ESM]: require() of ES Module
     "dialogflow-cx", // NOT_FOUND: com.google.apps.framework.request.NotFoundException: Agent 'undefined' does not exist
     "dlp", // [ERR_REQUIRE_ESM]: require() of ES Module
     "document-ai", // [ERR_REQUIRE_ESM]: require() of ES Module

.github/workflows/datastore-functions.yaml

@@ -12,34 +12,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-name: datastore-functions
+name: Deprecated Workflow
 on:
-  push:
-    branches:
-    - main
-    paths:
-    - 'datastore/functions/**'
-    - '.github/workflows/datastore-functions.yaml'
-    - '.github/workflows/test.yaml'
-  pull_request:
-    types:
-    - opened
-    - reopened
-    - synchronize
-    - labeled
-    paths:
-    - 'datastore/functions/**'
-    - '.github/workflows/datastore-functions.yaml'
-    - '.github/workflows/test.yaml'
-  schedule:
-  - cron: '0 0 * * 0'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
 jobs:
-  test:
-    permissions:
-      contents: 'read'
-      id-token: 'write'
-    if: github.event.action != 'labeled' || github.event.label.name == 'actions:force-run'
-    uses: ./.github/workflows/test.yaml
-    with:
-      name: 'datastore-functions'
-      path: 'datastore/functions'
+  deprecated:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "This workflow is deprecated and kept temporarily to bypass zizmor scan."

.github/workflows/utils/workflows.json

@@ -33,7 +33,6 @@
   "datacatalog/snippets",
   "datalabeling",
   "dataproc",
-  "datastore/functions",
   "dialogflow",
   "discoveryengine",
   "dlp",