chore: clear dead test and allowlist leftovers of dropped runtimes

tests/golden-parity-single-source.test.cjs

@@ -278,11 +278,9 @@ describe('#1575 — surface path: no prune data-loss over pre-existing legacy ag
 test('runMinimalInstall resolves local config dirs from RUNTIME_META alone (#3031)', () => {
   // install-shared.cjs used to carry a SECOND, hand-maintained local-dir map
   // beside RUNTIME_META. It drifted: several runtimes present in RUNTIME_META
-  // (e.g. hermes, zcode) were missing from it, so `scope: 'local'`
+  // (e.g. zcode) were missing from it, so `scope: 'local'`
   // for any of them resolved `path.join(root, undefined)` and threw a bare
-  // TypeError naming neither the runtime nor the map at fault. #3023 had
-  // already hit this for `pi` and fixed it by adding one more entry, which
-  // left the divergence itself intact for the next runtime to rediscover.
+  // TypeError naming neither the runtime nor the map at fault.
   //
   // Same anti-divergence pattern as the buildParityManifest guard above: the
   // duplicate is gone, and this asserts it does not come back.