[Enhancement] Remove unused variables in constant.go (#1474)

ray-operator/controllers/ray/common/constant.go

@@ -29,9 +29,6 @@ const (
 	// Finalizers for GCS fault tolerance
 	GCSFaultToleranceRedisCleanupFinalizer = "ray.io/gcs-ft-redis-cleanup-finalizer"
 
-	// Pod health state values
-	PodUnhealthy = "Unhealthy"
-
 	EnableAgentServiceKey  = "ray.io/enableAgentService"
 	EnableAgentServiceTrue = "true"
 
@@ -74,9 +71,6 @@ const (
 	// The defaule RayService Identifier.
 	RayServiceCreatorLabelValue = "rayservice"
 
-	// Check node if ready by checking the path exists or not
-	PodReadyFilepath = "POD_READY_FILEPATH"
-
 	// Use as container env variable
 	RAY_CLUSTER_NAME                        = "RAY_CLUSTER_NAME"
 	RAY_IP                                  = "RAY_IP"
@@ -127,9 +121,6 @@ const (
 	RayAgentRayletHealthPath  = "api/local_raylet_healthz"
 	RayDashboardGCSHealthPath = "api/gcs_healthz"
 
-	// Default autoscaler image when running Ray at versions older than 2.0.0
-	FallbackDefaultAutoscalerImage = "rayproject/ray:2.0.0"
-
 	// Finalizers for RayJob
 	RayJobStopJobFinalizer = "ray.io/rayjob-finalizer"
 )