How to delete TXTSearchTool search memory data

[CXWXAF]

docxreader = Agent(
role='docxreader',
goal='',
backstory="",
verbose=True,
allow_delegation=False,
tools=[DirectoryReadTool, TXTSearchTool],
llm=llm_gpt4,
)
I dont want PersistentData,but it alway give me that
2024-05-16 17:05:32,417 - 14828 - local_persistent_hnsw.py-local_persistent_hnsw:271 - WARNING: Add of existing embedding ID: default-app-id--ff7e974e46724e34ff03eda19a30980683b64475626182319a03f6630c6c3dda