[BugFix][KVCache] remove debug logging code

## Modifications

- fastdeploy/engine/request.py：删除调试用 logger 及 prompt_hashes 中的 debug 日志
- fastdeploy/worker/worker_process.py：删除 __main__ 中的调试 import 和 print 语句

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: kevincheng2

fastdeploy/engine/request.py

@@ -17,7 +17,6 @@
 from __future__ import annotations
 
 import json
-import logging
 import time
 import traceback
 from dataclasses import asdict, dataclass, fields
@@ -29,8 +28,6 @@
 if TYPE_CHECKING:
     from fastdeploy.cache_manager.v1.metadata import MatchResult
 
-logger = logging.getLogger("request_debug")
-
 import numpy as np
 from fastapi.responses import JSONResponse
 from pydantic import BaseModel
@@ -244,12 +241,6 @@ def prompt_hashes(self) -> list[str]:
         When accessing this property, it checks if there are new complete blocks
         that need hash computation, and if so, computes and appends them.
         """
-        logger.debug(
-            f"[DEBUG prompt_hashes] request_id={self.request_id}, "
-            f"has_block_hasher={self._block_hasher is not None}, "
-            f"existing_hashes_len={len(self._prompt_hashes)}, "
-            f"prompt_token_ids_len={len(self.prompt_token_ids) if self.prompt_token_ids else 0}"
-        )
         if self._block_hasher is not None:
             new_hashes = self._block_hasher(self)
             if new_hashes:

fastdeploy/worker/worker_process.py

@@ -1357,10 +1357,4 @@ def run_worker_proc() -> None:
 
 
 if __name__ == "__main__":
-    import sys
-
-    from fastdeploy.cache_manager.ops import cuda_host_alloc
-
-    print(f"[DEBUG] Worker process sys.path[0] = {sys.path[0]}", flush=True)
-    print(f"[DEBUG] Worker process cuda_host_alloc = {cuda_host_alloc}", flush=True)
     run_worker_proc()