feat(modules): remove world cup module

The 2026 tournament has ended, so the schedule and daily digest commands
have no upcoming matches to report. Drops the module, its catalog entry,
command menu entries, and the WC_FOOTBALL_DATA_TOKEN env var.

Stored subscriber and match-cache documents are left in place.

docs/deploy-coolify-selfhosted.md

@@ -33,7 +33,6 @@ Copy [`.env.example`](../.env.example) → `.env` (gitignored) and fill in.
 | `MODULES` | optional | CSV; empty = all modules |
 | `OWNER_ID` | optional | owner-only commands (renamed from `BOT_OWNER_ID`) |
 | `ADMIN_IDS` | optional | CSV of admin ids (renamed from `ADMIN_USER_IDS`) |
-| `WC_FOOTBALL_DATA_TOKEN` | optional | football-data.org token for the `wc` module |
 | `WHEELOFNAMES_API_URL` | optional | full `/api/gif` endpoint for remote `/wheelofnames` GIF rendering |
 | `WHEELOFNAMES_API_TOKEN` | optional | bearer token matching the wheelofnames service `API_TOKEN` |