chore: remove 2.0.0-dev image tag from CI

No longer needed — main builds tag as latest only.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/build-and-push.yaml

@@ -47,7 +47,6 @@ jobs:
             type=ref,event=pr
             type=sha,prefix=sha-
             type=raw,value=latest,enable={{is_default_branch}}
-            type=raw,value=2.0.0-dev,enable={{is_default_branch}}
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v6