Remove sync-chart-index.yaml from master repo

Signed-off-by: Javier Salmeron Garcia <jsalmeron@vmware.com>

.github/workflows/sync-chart-index.yaml

@@ -1,18 +0,0 @@
-name: Sync bitnami/charts index.yaml to S3
-
-on:
-  push:
-    branches:
-    - index
-
-jobs:
-  deploy:
-    name: Sync bitnami/charts index.yaml to S3
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@master
-    - name: Install s3cmd
-      run: sudo apt-get install -y s3cmd
-    - name: Upload to S3
-      run: |
-        s3cmd put --region=${{ secrets.AWS_REGION }} --access_key=${{ secrets.AWS_ACCESS_KEY_ID }} --secret_key=${{ secrets.AWS_SECRET_ACCESS_KEY }} --acl public-read --follow-symlinks --delete bitnami/index.yaml s3://${{ secrets.AWS_S3_BUCKET }}/bitnami/