Remove grpc-balancer.py and update deployment configuration

- Deleted grpc-balancer.py as part of the cleanup process, streamlining the application setup.
- Updated playbook.yml to include new commands for managing the grpcbalancer service and SSL certificate.
- Modified docker-compose.yaml to remove the mounting of the SSL certificate, reflecting the updated deployment strategy.
- Adjusted rebuild.sh to change the working directory to ~/node for consistency in project structure.

deploy/docker-compose.yaml

@@ -7,7 +7,6 @@ services:
       - ./config.json:/app/config.json
       - node-logs:/logs
       - /var/run/docker.sock:/var/run/docker.sock
-      - /root/node/cert.pem:/usr/local/share/ca-certificates/grpcbalancer.crt:ro
     tty: true
     networks:
       - network