Remove helm chart tarball from the releases artifacts

### Task Summary

Currently the released artifacts include source code, helm chart and docker compose tarball. The helm chart is hard to test and deploy by individuals. Therefore, I think we need to remove it from the released artifacts

### Task Type

- [x] Refactor / Cleanup
- [ ] DevOps / Deployment / CI
- [ ] Testing / QA
- [ ] Documentation
- [ ] Performance
- [ ] Other