Remove Code Climate coverage upload steps from GitHub Actions workflow (#8182)

DESCRIPTION: Remove Code Climate coverage upload steps from GitHub
Actions workflow

CI: remove Code Climate coverage reporting (cc-test-reporter) and
related jobs; keep Codecov as source of truth

* **Why**
Code Climate’s test-reporter has been archived; their download/API path
is no longer served, which breaks our CC upload step (`cc-test-reporter
…` ends up downloading HTML/404).

* **What changed**

* Drop the Code Climate formatting/artifact steps from the composite
action `.github/actions/upload_coverage/action.yml`.
* Delete the `upload-coverage` job that aggregated and pushed to Code
Climate (`cc-test-reporter sum-coverage` / `upload-coverage`).

* **Impact**

  * Codecov uploads remain; coverage stays visible via Codecov.
  * No test/build behavior change—only removes a failing reporter path.

cherry-picked from 8bb8b2ce2d

.github/actions/upload_coverage/action.yml

@@ -13,15 +13,3 @@ runs:
       token: ${{ inputs.codecov_token }}
       verbose: true
       gcov: true
-  - name: Create codeclimate coverage
-    run: |-
-      lcov --directory . --capture --output-file lcov.info
-      lcov --remove lcov.info -o lcov.info '/usr/*'
-      sed "s=^SF:$PWD/=SF:=g" -i lcov.info # relative pats are required by codeclimate
-      mkdir -p /tmp/codeclimate
-      cc-test-reporter format-coverage -t lcov -o /tmp/codeclimate/${{ inputs.flags }}.json lcov.info
-    shell: bash
-  - uses: actions/upload-artifact@v4.6.0
-    with:
-      path: "/tmp/codeclimate/*.json"
-      name: codeclimate-${{ inputs.flags }}

.github/workflows/build_and_test.yml

@@ -386,29 +386,6 @@ jobs:
       with:
         flags: ${{ env.PG_MAJOR }}_citus_upgrade
         codecov_token: ${{ secrets.CODECOV_TOKEN }}
-  upload-coverage:
-    if: always()
-    env:
-      CC_TEST_REPORTER_ID: ${{ secrets.CC_TEST_REPORTER_ID }}
-    runs-on: ubuntu-latest
-    container:
-      image: ${{ needs.params.outputs.test_image_name }}:${{ fromJson(needs.params.outputs.pg16_version).full }}${{ needs.params.outputs.image_suffix }}
-    needs:
-      - params
-      - test-citus
-      - test-arbitrary-configs
-      - test-citus-upgrade
-      - test-pg-upgrade
-    steps:
-      - uses: actions/download-artifact@v4.1.8
-        with:
-          pattern: codeclimate*
-          path: codeclimate
-          merge-multiple: true
-      - name: Upload coverage results to Code Climate
-        run: |-
-          cc-test-reporter sum-coverage codeclimate/*.json -o total.json
-          cc-test-reporter upload-coverage -i total.json
   ch_benchmark:
     name: CH Benchmark
     if: startsWith(github.ref, 'refs/heads/ch_benchmark/')