[V0 Deprecation] Remove Prompt Adapters (#20588)

Signed-off-by: mgoin <mgoin64@gmail.com>

vllm/v1/engine/llm_engine.py

@@ -17,7 +17,6 @@ from vllm.lora.request import LoRARequest
 from vllm.multimodal import MULTIMODAL_REGISTRY, MultiModalRegistry
 from vllm.outputs import PoolingRequestOutput, RequestOutput
 from vllm.pooling_params import PoolingParams
-from vllm.prompt_adapter.request import PromptAdapterRequest
 from vllm.sampling_params import SamplingParams
 from vllm.transformers_utils.tokenizer_group import (
     TokenizerGroup, init_tokenizer_from_configs)
@@ -192,7 +191,6 @@ class LLMEngine:
         lora_request: Optional[LoRARequest] = None,
         tokenization_kwargs: Optional[dict[str, Any]] = None,
         trace_headers: Optional[Mapping[str, str]] = None,
-        prompt_adapter_request: Optional[PromptAdapterRequest] = None,
         priority: int = 0,
     ) -> None:
         # Validate the request_id type.
@@ -203,8 +201,7 @@ class LLMEngine:
         # Process raw inputs into the request.
         prompt_str, request = self.processor.process_inputs(
             request_id, prompt, params, arrival_time, lora_request,
-            tokenization_kwargs, trace_headers, prompt_adapter_request,
-            priority)
+            tokenization_kwargs, trace_headers, priority)
 
         n = params.n if isinstance(params, SamplingParams) else 1