chore: remove translation script and workflow files

.github/workflows/translate-readme.yml

@@ -1,33 +0,0 @@
-name: Translate README
-
-on:
-  workflow_dispatch:
-
-jobs:
-  translate:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: write
-    
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-      
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-      
-      - name: Translate README to all languages
-        env:
-          GLM_API_KEY: ${{ secrets.GLM_API_KEY }}
-        run: |
-          node .github/scripts/translate-readme.js vi zh-CN
-      
-      - name: Upload translations as artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: translated-readmes
-          path: i18n/