[CI/Build][Rust Frontend] Retire Buf schema publishing (#57046)

Co-authored-by: OpenAI Codex <noreply@openai.com>
Co-authored-by: Bugen Zhao <i@bugenzhao.com>
Signed-off-by: Julien Darve <jdarve@NVIDIA.com>

.github/workflows/buf.yml

@@ -5,12 +5,6 @@ on:
     paths:
       - "rust/proto/**"
       - ".github/workflows/buf.yml"
-  push:
-    tags:
-      - "v*"
-  schedule:
-    - cron: "0 8 * * *"
-  workflow_dispatch:
 
 permissions:
   contents: read
@@ -21,37 +15,14 @@ concurrency:
 
 jobs:
   proto:
-    if: github.repository_owner == 'vllm-project'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
-        with:
-          fetch-depth: 0
       - uses: bufbuild/buf-action@8c6a16e16f12ba20b6470afa9c2ba9b5ba8c97c3 # v1.5.0
         with:
           version: 1.72.0
           input: rust/proto
-          token: ${{ github.repository == 'vllm-project/vllm' && github.event_name != 'pull_request' && secrets.BUF_TOKEN || '' }}
           format: false
           breaking: false
           pr_comment: false
           push: false
-      - name: Publish nightly schema
-        if: github.repository == 'vllm-project/vllm' && (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch')
-        run: >-
-          buf push rust/proto
-          --create
-          --create-default-label main
-          --create-visibility public
-          --label nightly
-          --source-control-url "${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }}"
-      - name: Publish release schema
-        if: github.repository == 'vllm-project/vllm' && github.event_name == 'push'
-        run: >-
-          buf push rust/proto
-          --create
-          --create-default-label main
-          --create-visibility public
-          --label main
-          --label "${GITHUB_REF_NAME}"
-          --source-control-url "${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }}"