CI: Let "addon" workflow use the precompiled Dockerfiles

Author: tarleb

.github/workflows/addon.yaml

@@ -54,16 +54,6 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Install current pandoc
-        uses: pandoc/actions/setup@v1
-
-      - name: Generate Dockerfiles
-        run: >-
-          pandoc lua pandock.lua generate \
-              ${{ inputs.pandoc_version }} \
-              ${{ inputs.base_system }} \
-              ${{ inputs.addon }}
-
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with: