[misc] remove engine_use_ray (#8126)

vllm/envs.py

@@ -58,7 +58,6 @@ if TYPE_CHECKING:
     VLLM_ALLOW_LONG_MAX_MODEL_LEN: bool = False
     VLLM_TEST_FORCE_FP8_MARLIN: bool = False
     VLLM_RPC_GET_DATA_TIMEOUT_MS: int = 5000
-    VLLM_ALLOW_ENGINE_USE_RAY: bool = False
     VLLM_PLUGINS: Optional[List[str]] = None
     VLLM_TORCH_PROFILER_DIR: Optional[str] = None
     VLLM_ALLOW_RUNTIME_LORA_UPDATING: bool = False
@@ -391,14 +390,6 @@ environment_variables: Dict[str, Callable[[], Any]] = {
     "VLLM_RPC_GET_DATA_TIMEOUT_MS":
     lambda: int(os.getenv("VLLM_RPC_GET_DATA_TIMEOUT_MS", "5000")),
 
-    # If set, allow running the engine as a separate ray actor,
-    # which is a deprecated feature soon to be removed.
-    # See https://github.com/vllm-project/vllm/issues/7045
-    "VLLM_ALLOW_ENGINE_USE_RAY":
-    lambda:
-    (os.environ.get("VLLM_ALLOW_ENGINE_USE_RAY", "0").strip().lower() in
-     ("1", "true")),
-
     # a list of plugin names to load, separated by commas.
     # if this is not set, it means all plugins will be loaded
     # if this is set to an empty string, no plugins will be loaded