ci: remove associated PR changelog validation (#1852)

Author: Oseltamivir

.github/workflows/test-changelog-gate.yml

@@ -96,40 +96,3 @@ jobs:
               --base-ref 8aaff9fbb645ae9df9ba7593fa63273f839b62fb^1 \
               --head-ref 8aaff9fbb645ae9df9ba7593fa63273f839b62fb \
               --pr-number 1798
-
-      - name: Validate the associated pull request
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          PR_INFO="$(
-              gh api \
-                -H "Accept: application/vnd.github+json" \
-                "repos/${GITHUB_REPOSITORY}/commits/${GITHUB_SHA}/pulls" \
-                --jq '
-                  [.[] | select(.state == "open")]
-                  | first
-                  | if . == null then "" else ([.number, .base.ref] | @tsv) end
-                '
-          )"
-
-          if [ -z "$PR_INFO" ]; then
-              echo "::notice::No open pull request is associated with ${GITHUB_SHA}; skipping PR-diff validation"
-              exit 0
-          fi
-
-          IFS=$'\t' read -r PR_NUMBER BASE_BRANCH <<<"$PR_INFO"
-          git fetch --no-tags origin \
-            "+refs/heads/${BASE_BRANCH}:refs/remotes/origin/${BASE_BRANCH}"
-
-          if git diff --quiet \
-            "origin/${BASE_BRANCH}...${GITHUB_SHA}" \
-            -- perf-changelog.yaml; then
-              echo "::notice::PR #${PR_NUMBER} does not change perf-changelog.yaml; skipping PR-diff validation"
-              exit 0
-          fi
-
-          python utils/validate_perf_changelog.py \
-            --changelog-file perf-changelog.yaml \
-            --base-ref "origin/${BASE_BRANCH}" \
-            --head-ref "$GITHUB_SHA" \
-            --pr-number "$PR_NUMBER"

utils/changelog_gate_tests/test_validate_perf_changelog.py

@@ -252,25 +252,6 @@ def test_run_sweep_checks_changelog_before_reuse_and_setup() -> None:
     )
 
 
-def test_changelog_gate_skips_prs_without_changelog_changes() -> None:
-    repo_root = Path(__file__).resolve().parents[2]
-    workflow = yaml.load(
-        (repo_root / ".github/workflows/test-changelog-gate.yml").read_text(),
-        Loader=yaml.BaseLoader,
-    )
-    steps = workflow["jobs"]["test-changelog"]["steps"]
-    validate_step = next(
-        step
-        for step in steps
-        if step.get("name") == "Validate the associated pull request"
-    )
-    script = validate_step["run"]
-
-    assert "git diff --quiet" in script
-    assert "-- perf-changelog.yaml" in script
-    assert "skipping PR-diff validation" in script
-
-
 def test_merge_helper_waits_for_changelog_check_before_merge() -> None:
     repo_root = Path(__file__).resolve().parents[2]
     script = (repo_root / "utils/merge_with_reuse.sh").read_text()