diff --git a/pilot/model/model_adapter.py b/pilot/model/model_adapter.py
index bed62a34d..bd6408ed1 100644
--- a/pilot/model/model_adapter.py
+++ b/pilot/model/model_adapter.py
@@ -158,7 +158,7 @@ class LLMModelAdaper:
             else:
                 raise ValueError(f"Unknown role: {role}")
 
-        can_use_systems:[] = []
+        can_use_systems: [] = []
         if system_messages:
             if len(system_messages) > 1:
                 ##  Compatible with dbgpt complex scenarios, the last system will protect more complete information entered by the current user
@@ -166,7 +166,7 @@ class LLMModelAdaper:
                 can_use_systems = system_messages[:-1]
             else:
                 can_use_systems = system_messages
-        for  i in range(len(user_messages)):
+        for i in range(len(user_messages)):
             # TODO vicuna 兼容 测试完放弃
             user_messages[-1] = system_messages[-1]
             if len(system_messages) > 1:
diff --git a/pilot/model/proxy/llms/chatgpt.py b/pilot/model/proxy/llms/chatgpt.py
index 97699897c..9e6d1a20a 100644
--- a/pilot/model/proxy/llms/chatgpt.py
+++ b/pilot/model/proxy/llms/chatgpt.py
@@ -58,42 +58,6 @@ def _initialize_openai(params: ProxyModelParameters):
     return openai_params
 
 
-def __convert_2_gpt_messages(messages: List[ModelMessage]):
-
-    chat_round = 0
-    gpt_messages = []
-
-    last_usr_message = ""
-    system_messages = []
-
-    for message in messages:
-        if message.role == ModelMessageRoleType.HUMAN:
-            last_usr_message =  message.content
-        elif message.role == ModelMessageRoleType.SYSTEM:
-            system_messages.append(message.content)
-        elif message.role == ModelMessageRoleType.AI:
-            last_ai_message = message.content
-            gpt_messages.append({"role": "user", "content": last_usr_message})
-            gpt_messages.append({"role": "assistant", "content": last_ai_message})
-
-    # build last user messge
-
-    if len(system_messages) >0:
-        if len(system_messages) > 1:
-            end_message = system_messages[-1]
-        else:
-            last_message = messages[-1]
-            if last_message.role == ModelMessageRoleType.HUMAN:
-                end_message = system_messages[-1] + "\n"  + last_message.content
-            else:
-                end_message = system_messages[-1]
-    else:
-        last_message = messages[-1]
-        end_message = last_message.content
-    gpt_messages.append({"role": "user", "content": end_message})
-    return gpt_messages, system_messages
-
-
 def _initialize_openai_v1(params: ProxyModelParameters):
     try:
         from openai import OpenAI
diff --git a/pilot/vector_store/milvus_store.py b/pilot/vector_store/milvus_store.py
index 582289d80..0083e9cb3 100644
--- a/pilot/vector_store/milvus_store.py
+++ b/pilot/vector_store/milvus_store.py
@@ -168,61 +168,6 @@ class MilvusStore(VectorStoreBase):
 
         return ids
 
-    # def init_schema(self) -> None:
-    #     """Initialize collection in milvus database."""
-    #     fields = [
-    #         FieldSchema(name="pk", dtype=DataType.INT64, is_primary=True, auto_id=True),
-    #         FieldSchema(name="vector", dtype=DataType.FLOAT_VECTOR, dim=self.model_config["dim"]),
-    #         FieldSchema(name="raw_text", dtype=DataType.VARCHAR, max_length=65535),
-    #     ]
-    #
-    #     # create collection if not exist and load it.
-    #     self.schema = CollectionSchema(fields, "db-gpt memory storage")
-    #     self.collection = Collection(self.collection_name, self.schema)
-    #     self.index_params_map = {
-    #         "IVF_FLAT": {"params": {"nprobe": 10}},
-    #         "IVF_SQ8": {"params": {"nprobe": 10}},
-    #         "IVF_PQ": {"params": {"nprobe": 10}},
-    #         "HNSW": {"params": {"ef": 10}},
-    #         "RHNSW_FLAT": {"params": {"ef": 10}},
-    #         "RHNSW_SQ": {"params": {"ef": 10}},
-    #         "RHNSW_PQ": {"params": {"ef": 10}},
-    #         "IVF_HNSW": {"params": {"nprobe": 10, "ef": 10}},
-    #         "ANNOY": {"params": {"search_k": 10}},
-    #     }
-    #
-    #     self.index_params = {
-    #         "metric_type": "IP",
-    #         "index_type": "HNSW",
-    #         "params": {"M": 8, "efConstruction": 64},
-    #     }
-    #     # create index if not exist.
-    #     if not self.collection.has_index():
-    #         self.collection.release()
-    #         self.collection.create_index(
-    #             "vector",
-    #             self.index_params,
-    #             index_name="vector",
-    #         )
-    #     info = self.collection.describe()
-    #     self.collection.load()
-
-    # def insert(self, text, model_config) -> str:
-    #     """Add an embedding of data into milvus.
-    #     Args:
-    #         text (str): The raw text to construct embedding index.
-    #     Returns:
-    #         str: log.
-    #     """
-    #     # embedding = get_ada_embedding(data)
-    #     embeddings = HuggingFaceEmbeddings(model_name=self.model_config["model_name"])
-    #     result = self.collection.insert([embeddings.embed_documents(text), text])
-    #     _text = (
-    #         "Inserting data into memory at primary key: "
-    #         f"{result.primary_keys[0]}:\n data: {text}"
-    #     )
-    #     return _text
-
     def _add_documents(
         self,
         texts: Iterable[str],
diff --git a/setup.py b/setup.py
index d1b6ceb98..b74a2f116 100644
--- a/setup.py
+++ b/setup.py
@@ -317,6 +317,7 @@ def core_requires():
         # TODO move transformers to default
         "transformers>=4.31.0",
         "alembic==1.12.0",
+        # for excel
         "openpyxl==3.1.2",
         "chardet==5.1.0",
         "xlrd==2.0.1",