Fix bugs (#3502)

### What problem does this PR solve?

1. Remove unused code
2. Fix type mismatch, in nlp search and infinity search interface
3. Fix chunk list, get all chunks of this user.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

---------

Signed-off-by: jinhai <haijin.chn@gmail.com>

agent/component/base.py

@@ -17,13 +17,13 @@ from abc import ABC
 import builtins
 import json
 import os
+import logging
 from functools import partial
 from typing import Tuple, Union
 
 import pandas as pd
 
 from agent import settings
-from agent.settings import flow_logger, DEBUG
 
 _FEEDED_DEPRECATED_PARAMS = "_feeded_deprecated_params"
 _DEPRECATED_PARAMS = "_deprecated_params"
@@ -480,7 +480,6 @@ class ComponentBase(ABC):
 
         upstream_outs = []
 
-        if DEBUG: print(self.component_name, reversed_cpnts[::-1])
         for u in reversed_cpnts[::-1]:
             if self.get_component_name(u) in ["switch", "concentrator"]: continue
             if self.component_name.lower() == "generate" and self.get_component_name(u) == "retrieval":