ci: remove champions sync to archived downstream repo

The loldle repo is archived and read-only, so every push after a data
update failed with a 403. Consumers read champions.json from this repo
directly instead.

Checkout no longer overrides the token: the PAT existed only so the data
commit would trigger the sync workflow, and contents: write on the
default GITHUB_TOKEN covers the push.

data/.github/workflows/sync-champions.yml

@@ -1,46 +0,0 @@
-name: Sync champions to downstream repos
-
-on:
-  push:
-    branches: [main]
-    paths: [champions.json]
-  workflow_dispatch:
-
-jobs:
-  sync:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v5
-
-      # Fan out champions.json to downstream repos.
-      # Each row: <repo> <dest-path> [post-copy command].
-      # Add a new target by appending one line — no other edits required.
-      - name: Sync
-        env:
-          GH_PAT: ${{ secrets.LOLDLE_PAT }}
-        run: |
-          set -euo pipefail
-          git config --global user.name "github-actions[bot]"
-          git config --global user.email "github-actions[bot]@users.noreply.github.com"
-
-          sync_repo() {
-            local repo=$1 dest=$2 post=${3:-}
-            local dir=${repo##*/}
-            git clone --depth 1 \
-              "https://x-access-token:${GH_PAT}@github.com/${repo}.git" "$dir"
-            cp champions.json "$dir/$dest"
-            (
-              cd "$dir"
-              if [ -n "$post" ]; then eval "$post"; fi
-              git add -A
-              if git diff --cached --quiet; then
-                echo "$repo already up to date"
-                exit 0
-              fi
-              git commit -m "chore(data): sync champions from loldle-data@${GITHUB_SHA::7}"
-              git push
-            )
-          }
-
-          sync_repo tiennm99/loldle public/champions.json

data/.github/workflows/update-champions.yml

@@ -13,12 +13,8 @@ jobs:
   update:
     runs-on: ubuntu-latest
     steps:
-      # LOLDLE_PAT so the subsequent push triggers sync-champions.yml;
-      # default GITHUB_TOKEN would silently skip downstream triggers.
       - name: Checkout
         uses: actions/checkout@v5
-        with:
-          token: ${{ secrets.LOLDLE_PAT }}
 
       - name: Set up Go
         uses: actions/setup-go@v6