test(host-conformance): delete the named scope.md in the C3 broken-link case

A test repair the remote gate requires, not a review finding. The case
deleted the first .md readdirSync listed under gstack-qa/sections, and
on the remote-gate VM's ext4 that was a file setup --status does not
count, so the case was deterministically red there (#3479) while green
locally and on Actions. The same one-line change ships in #3471
(fd468eb); this copy carries no CHANGELOG line so the two merge cleanly.

Refs #3479

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

test/host-conformance.test.ts

@@ -202,8 +202,7 @@ describe.skipIf(process.platform === 'win32')('host conformance kit', () => {
     const router = join(f.home, '.codex/skills/gstack/SKILL.md');
     rmSync(router);
     symlinkSync(join(src, '.agents/skills/gstack/SKILL.md'), router);
-    const qa = join(src, '.agents/skills/gstack-qa/sections');
-    rmSync(join(qa, readdirSync(qa).find(n => n.endsWith('.md'))!));
+    rmSync(join(src, '.agents/skills/gstack-qa/sections/scope.md'));
     const status = runSetup(f, join(src, 'setup'), ['--status']);
     // A1: broken section links make --status exit 1 instead of always 0.
     expect(status.status).toBe(1);