[RayService] Remove everything related to Ray Serve V1 API

[kevin85421]

Why are these changes needed?

• ray-service.custom-serve-service.yaml

  # Step 1: Build KubeRay image and install it.
  # Step 2: Create the RayService
  kubectl apply -f ray-service.custom-serve-service.yaml
  
  # Step 3: Port forwarding
  kubectl port-forward svc/custom-ray-serve-service-name 8000
  
  # Step 4: Send a request
  curl -X POST -H 'Content-Type: application/json' localhost:8000/fruit/ -d '["PEAR", 12]'

• ray-service.different-port.yaml

  # Step 1: Build KubeRay image and install it.
  # Step 2: Create the RayService
  kubectl apply -f ray-service.different-port.yaml
  
  # Step 3: Port forwarding
  kubectl port-forward svc/custom-ray-serve-service-name 9000
  
  # Step 4: Send a request
  curl -X POST -H 'Content-Type: application/json' localhost:9000/fruit/ -d '["PEAR", 12]'

Related issue number

#1779

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • This PR is not tested :(