scripts: their printed messages stop citing record and bug numbers

A failure message pointed at records and bug ids that are not in this
repo; each now says the fact alone. Only message text changes.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

scripts/pass-span-lint.py

@@ -46,7 +46,7 @@ def lint(path: pathlib.Path) -> list[str]:
                     findings.append(
                         f"{path}:{lineno}: a second pass_span on `{pass_name}` while "
                         f"`{outer_guard}` (line {outer_line}) is still open — one "
-                        f"pipeline-statistics query at a time (2258, B390)"
+                        f"pipeline-statistics query at a time"
                     )
             if guard is not None:
                 open_spans.append((guard, pass_name, lineno))