Remove build.yaml

.github/workflows/build.yaml

@@ -1,36 +0,0 @@
-name: Build
-on:
-  push:
-    # タグ付きpushの時にする
-    tags:
-
-    # TODO: 後で消す
-    branches:
-      - migrate/github-actions
-
-  # 手動ビルドもできるように(いる？)
-  workflow_dispatch:
-
-jobs:
-  build:
-    name: build-images
-    runs-on: ubuntu-22.04
-    steps:
-      - uses: actions/checkout@v3
-      - name: "Login to GitHub Container Registry"
-        uses: docker/login-action@v2
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-      - name: Prepare image tags
-        run: |
-          echo "FORMATTED_BRANCH_NAME=$(echo ${{ github.ref_name }} | sed -e 's/\//-/g' )" >> $GITHUB_ENV
-      - name: "Build and Push"
-        uses: docker/build-push-action@v4
-        with:
-          context: .
-          push: true
-          tags: |
-            ghcr.io/misskeyio/misskey:latest
-            ghcr.io/misskeyio/misskey:${{ env.FORMATTED_BRANCH_NAME }}