remove sqlite3 fix in the development branch

document_qa/document_qa_engine.py

@@ -1,7 +1,3 @@
-__import__('pysqlite3')
-import sys
-sys.modules['sqlite3'] = sys.modules.pop('pysqlite3')
-
 import copy
 import os
 from pathlib import Path

requirements.txt

@@ -16,7 +16,6 @@ dateparser
 
 # LLM
 chromadb==0.4.19
-pysqlite3-binary
 tiktoken==0.4.0
 openai==0.27.7
 langchain==0.0.350