docs: remove all Gitee links (#12845)

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,3 +1,3 @@
-Before submitting a pull request, please read the [contributing guide](https://vant-contrib.gitee.io/vant/#/en-US/contribution).
+Before submitting a pull request, please read the [contributing guide](https://vant-ui.github.io/vant/#/en-US/contribution).
 
-在提交 pull request 之前，请阅读 [贡献指南](https://vant-contrib.gitee.io/vant/#/zh-CN/contribution)。
+在提交 pull request 之前，请阅读 [贡献指南](https://vant-ui.github.io/vant/#/zh-CN/contribution)。

.github/workflows/deploy-v4-site.yml

@@ -32,30 +32,6 @@ jobs:
       - name: Build Site
         run: npm run build:site
 
-      - name: Deploy for Gitee 🚀
-        uses: JamesIves/github-pages-deploy-action@v4.6.0
-        with:
-          branch: gh-pages
-          folder: packages/vant/site-dist
-          # enable single-commit to reduce the repo size
-          single-commit: true
-          clean: true
-          clean-exclude: |
-            1.x/*
-            1.x/**/*
-            next/*
-            next/**/*
-            v1/*
-            v1/**/*
-            v2/*
-            v2/**/*
-            v3/*
-            v3/**/*
-            v4/*
-            v4/**/*
-            vant-use/*
-            vant-use/**/*
-
       - name: Deploy for GitHub 🚀
         uses: JamesIves/github-pages-deploy-action@v4.6.0
         with:

.github/workflows/sync-gitee.yml

@@ -1,28 +0,0 @@
-name: Sync to Gitee
-
-on:
-  push:
-    tags:
-      - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
-
-  # Sync to gitee everyday
-  schedule:
-    - cron: '0 1 * * *'
-
-  workflow_dispatch:
-
-jobs:
-  build:
-    if: github.repository == 'youzan/vant'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Sync to Gitee
-        uses: wearerequired/git-mirror-action@v1.2.0
-        env:
-          # 在 Settings->Secrets 配置 GITEE_RSA_PRIVATE_KEY
-          SSH_PRIVATE_KEY: ${{ secrets.GITEE_RSA_PRIVATE_KEY }}
-        with:
-          # GitHub 源仓库地址
-          source-repo: git@github.com:vant-ui/vant.git
-          # Gitee 目标仓库地址
-          destination-repo: git@gitee.com:vant-contrib/vant.git