chore: 自用 fork 指向本仓库 git.dr1997.com/public/reinstall, 移除上游引用

- reinstall.sh/reinstall.bat confhome 改为 git.dr1997.com/public/reinstall/raw/main
- confhome_cn 置空(本仓库即国内托管, 无需镜像)
- 删除 sync_to_cnb.yml(上游 CI 同步 workflow, 引用 bin456789 仓库)

.github/workflows/sync_to_cnb.yml

@@ -1,18 +0,0 @@
-name: 同步到 CNB
-on:
-  workflow_dispatch:
-  push:
-jobs:
-  run:
-    name: 同步到 CNB
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - uses: yesolutions/mirror-action@master
-        with:
-          REMOTE: https://cnb.cool/bin456789/reinstall.git
-          GIT_USERNAME: cnb
-          GIT_PASSWORD: ${{ secrets.CNB_TOKEN }}
-          PUSH_ALL_REFS: false