Prune commentary and stale Rust port notes

src/android/mod.rs

@@ -1,17 +1,3 @@
-//! iris's second windowing backend: `android-view` (a `SurfaceView` plus a
-//! JNI `ViewPeer`) instead of winit. See RUST.md's I2 for why this exists
-//! as a second backend rather than winit's own (unfinished, and blocked on
-//! `android-activity`'s backend-feature requirement) Android support, and
-//! for the pass condition this was built against.
-//!
-//! Structured to mirror `default/` module for module: `view.rs` is that
-//! module's `app.rs` + `state.rs` combined (android-view has one harness
-//! type, `ViewPeer`, where winit splits `ApplicationHandler` from the
-//! per-window state), `render.rs` is `render.rs`, `input.rs` is `input.rs`,
-//! `attr.rs` is `attr.rs`. `ime.rs` and `insets.rs` have no winit
-//! counterpart: winit cannot drive an IME beyond `Ime::Preedit`/`Commit`
-//! (RUST.md's E1) and has no concept of Android's window insets at all.
-
 mod access;
 mod attr;
 mod ime;