[V0 Deprecation] Remove V0 core (#25321)

Signed-off-by: Woosuk Kwon <woosuk@thinkingmachines.ai>
Signed-off-by: Woosuk Kwon <woosuk.kwon@berkeley.edu>

vllm/engine/protocol.py

@@ -7,13 +7,11 @@ from typing import Any, AsyncGenerator, Iterable, Mapping, Optional, Union
 
 from vllm.beam_search import BeamSearchSequence, create_sort_beams_key_function
 from vllm.config import ModelConfig, VllmConfig
-from vllm.core.scheduler import SchedulerOutputs
 from vllm.inputs.data import PromptType, TokensPrompt
 from vllm.inputs.parse import is_explicit_encoder_decoder_prompt
 from vllm.inputs.preprocess import InputPreprocessor
 from vllm.logger import init_logger
 from vllm.lora.request import LoRARequest
-from vllm.model_executor.layers.sampler import SamplerOutput
 from vllm.outputs import CompletionOutput, PoolingRequestOutput, RequestOutput
 from vllm.plugins.io_processors.interface import IOProcessor
 from vllm.pooling_params import PoolingParams
@@ -266,11 +264,7 @@ class EngineClient(ABC):
         ...
 
     @abstractmethod
-    async def do_log_stats(
-        self,
-        scheduler_outputs: Optional[SchedulerOutputs] = None,
-        model_output: Optional[list[SamplerOutput]] = None,
-    ) -> None:
+    async def do_log_stats(self) -> None:
         ...
 
     @abstractmethod