Docs: stop claiming removed apps ship by default

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QKxGW1raAWaqeU8WdHsMsp

docs/file-layout.md

@@ -207,8 +207,7 @@ It only does the things `/etc/skel` can't:
   and `~/.config/gtk-3.0/bookmarks` (needs `$HOME` expansion).
 - Hyprland's package-owned default input reads `XKBLAYOUT` / `XKBVARIANT`
   from `/etc/vconsole.conf`; no per-user Hyprland config rewrite is needed.
-- `xdg-settings set default-web-browser chromium.desktop` and
-  `xdg-mime default HEY.desktop x-scheme-handler/mailto` (XDG-aware paths).
+- `xdg-settings set default-web-browser chromium.desktop` (XDG-aware path).
 - `omarchy-refresh-applications` (composes generated `.desktop` launchers).
 - Sources `install/user/all.sh` — theme, chromium, git, xcompose, mise,
   keyring, per-user hardware quirks (asus mic/mixer, framework f13 audio, …).