Remove mod_menu: superseded by Horizon's built-in Mods menu

The owner retires it: 0.1.1 needs an old launcher inventory feed and the game's own Mods screen now does the same job.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

mods/mod_menu.toml

@@ -1,42 +0,0 @@
-id = "mod_menu"
-kind = "mod"
-name = "Mod Menu"
-summary = "Browse installed mods, including native mods, with versions, enabled states, filters and search."
-description = """
-An independent, sandboxed mod browser by levzzz5154.
-
-Press **M** while playing, run **`/modmenu`**, or open
-**Options → Mods → Mod Menu → Settings**. Use `/modmenu text` to search names,
-ids and mod types. Filter all/enabled/disabled mods, browse pages, select a row
-for details, and refresh after changing mods in the launcher.
-
-Lists installed sandboxed, content and native source mods in the current instance.
-Enabled means the launcher's selected state, not proof a mod is running. This is
-a read-only menu: it does not toggle other mods, run commands, or start native builds.
-
-**Requires a launcher with the schema-1 Mod Menu inventory feed**
-([Horizon #3112](https://github.com/horizon-rust/horizon/pull/3112)). On a launcher
-without it, the menu shows an explicit update message. The launcher supplies display
-metadata through this mod's own sandbox storage; the mod has no general filesystem
-or network access. Direct external `--dev-mod` paths and runtime failure status
-are not included in the feed.
-
-Tested on Horizon nightly `83f15fa27` (Minecraft 26.3), mod API 0.1 / API level 0.
-Other Horizon revisions have unverified support. This `.hmod` does not require Rust,
-Git, Horizon Mixins or any native build to install.
-
-Independently written, not a port of another project's Mod Menu. No Minecraft code
-or artwork is included. MIT licensed; source, tests and feed specification are linked below.
-"""
-authors = ["levzzz5154"]
-owners = ["levzzz5154"]
-license = "MIT"
-source = "https://github.com/levzzz5154/horizon-mod-menu"
-
-[[versions]]
-version = "0.1.1"
-published = "2026-10-28"
-game = "26.3"
-file = "mod_menu-0.1.1.hmod"
-sha256 = "3833b79bbb9607c5cab6dbdc4a6d3e31754c2ed183b1c6bf431f3615b93ef3b5"
-changelog = "First release: installed mods, enabled states, native/content/sandboxed types, paging, filters, search and refresh. Requires the launcher inventory feed."