quest: clean up second release-backport batch after landing

quest/m1/README.md

@@ -68,7 +68,6 @@ session outcomes, and embedder refusals inside session outcomes.
 - [Dogfood hosted worklets](/quest/m1/dogfood-assets.md) - the moq.pro dashboard hosts the worklets and calls `assets()` after the release
 - [More tests under load](/quest/m1/test-flakes-2/README.md) - the second round of load-only failures, one quest per flake, fixed at the cause
 - [Test TypeScript check](/quest/m1/test-ts-check.md) - `just check` type-checks the TypeScript harnesses under test/
-- [Release backports, second batch](/quest/m1/release-backports/README.md) - the 0.17.x line picks up the smaller release-only fixes left from the 2026-10-09 triage
 - [END_OF_TRACK placement](/quest/m1/ietf-end-of-track-placement.md) - END_OF_TRACK rides the upstream's Location, and Rust's header stops claiming END_OF_GROUP
 - [Plan: a public model](/quest/m1/model-public-surface.md) - every crate-private model item is made public or unnecessary, so a custom publisher or subscriber builds from the public model alone
 - [FFI runtime](/quest/m1/ffi-runtime.md) - moq-ffi drives moq on a multi-thread runtime instead of one thread