Remove Ray health check (vllm-project#4693)

vllm/executor/ray_gpu_executor.py

@@ -293,23 +293,6 @@ def _compiled_ray_dag(self):
             ])
         return forward_dag.experimental_compile()
 
-    def check_health(self) -> None:
-        """Raises an error if engine is unhealthy."""
-        self._check_if_any_actor_is_dead()
-
-    def _check_if_any_actor_is_dead(self):
-        if not self.workers:
-            return
-
-        dead_actors = []
-        for actor in self.workers:
-            actor_state = ray.state.actors(actor._ray_actor_id.hex())  # pylint: disable=protected-access
-            if actor_state["State"] == "DEAD":
-                dead_actors.append(actor)
-        if dead_actors:
-            raise RuntimeError("At least one Worker is dead. "
-                               f"Dead Workers: {dead_actors}. ")
-
 
 class RayGPUExecutorAsync(RayGPUExecutor, DistributedGPUExecutorAsync):