[Minor] Remove unused env variable (#27161)

vllm/envs.py

@@ -42,7 +42,6 @@ if TYPE_CHECKING:
     VLLM_LOGGING_PREFIX: str = ""
     VLLM_LOGGING_STREAM: str = "ext://sys.stdout"
     VLLM_LOGGING_CONFIG_PATH: str | None = None
-    VLLM_LOGITS_PROCESSOR_THREADS: int | None = None
     VLLM_LOG_STATS_INTERVAL: float = 10.0
     VLLM_TRACE_FUNCTION: int = 0
     VLLM_ATTENTION_BACKEND: str | None = None
@@ -142,7 +141,6 @@ if TYPE_CHECKING:
     VLLM_RAY_DP_PACK_STRATEGY: Literal["strict", "fill", "span"] = "strict"
     VLLM_MARLIN_USE_ATOMIC_ADD: bool = False
     VLLM_MXFP4_USE_MARLIN: bool | None = None
-    VLLM_V0_USE_OUTLINES_CACHE: bool = False
     VLLM_V1_USE_OUTLINES_CACHE: bool = False
     VLLM_TPU_BUCKET_PADDING_GAP: int = 0
     VLLM_TPU_MOST_MODEL_LEN: int | None = None
@@ -567,15 +565,6 @@ environment_variables: dict[str, Callable[[], Any]] = {
     "VLLM_LOGGING_STREAM": lambda: os.getenv("VLLM_LOGGING_STREAM", "ext://sys.stdout"),
     # if set, VLLM_LOGGING_PREFIX will be prepended to all log messages
     "VLLM_LOGGING_PREFIX": lambda: os.getenv("VLLM_LOGGING_PREFIX", ""),
-    # if set, vllm will call logits processors in a thread pool with this many
-    # threads. This is useful when using custom logits processors that either
-    # (a) launch additional CUDA kernels or (b) do significant CPU-bound work
-    # while not holding the python GIL, or both.
-    "VLLM_LOGITS_PROCESSOR_THREADS": lambda: int(
-        os.getenv("VLLM_LOGITS_PROCESSOR_THREADS", "0")
-    )
-    if "VLLM_LOGITS_PROCESSOR_THREADS" in os.environ
-    else None,
     # If set, vllm will log stats at this interval in seconds
     # If not set, vllm will log stats every 10 seconds.
     "VLLM_LOG_STATS_INTERVAL": lambda: val
@@ -1066,13 +1055,6 @@ environment_variables: dict[str, Callable[[], Any]] = {
     "VLLM_MXFP4_USE_MARLIN": lambda: maybe_convert_bool(
         os.environ.get("VLLM_MXFP4_USE_MARLIN", None)
     ),
-    # Whether to turn on the outlines cache for V0
-    # This cache is unbounded and on disk, so it's not safe to use in
-    # an environment with potentially malicious users.
-    "VLLM_V0_USE_OUTLINES_CACHE": lambda: os.environ.get(
-        "VLLM_V0_USE_OUTLINES_CACHE", "0"
-    )
-    == "1",
     # Whether to turn on the outlines cache for V1
     # This cache is unbounded and on disk, so it's not safe to use in
     # an environment with potentially malicious users.