Update app.py

app.py

@@ -27,15 +27,10 @@ from langchain_community.vectorstores.utils import filter_complex_metadata
 from langchain.schema import Document
 from langgraph.graph import START, END, StateGraph
 from langchain_community.document_loaders.directory import DirectoryLoader 
-
-from functions import *
 import pprint
 from pathlib import Path
-from sqlalchemy import create_engine
 from langchain.retrievers import ContextualCompressionRetriever
-
 from langchain.storage import InMemoryByteStore
-
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.retrievers.document_compressors import CrossEncoderReranker
 from langchain_community.cross_encoders import HuggingFaceCrossEncoder 
@@ -45,15 +40,9 @@ from functions import *
 
 from langchain.callbacks.manager import CallbackManager
 from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler
-from langchain.retrievers.document_compressors import FlashrankRerank
 
 
-os.environ["LANGCHAIN_API_KEY"] = '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'
-os.environ["LANGCHAIN_TRACING_V2"]="true"
-os.environ["LANGCHAIN_ENDPOINT"]= "https://api.smith.langchain.com"
-os.environ["LANGCHAIN_PROJECT"] = "Lithuanian_law_v2_LT_Kalba"
-os.environ["GROQ_API_KEY"] = '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' 
-os.environ["SERPER_API_KEY"] = '6f80701ecd004c2466e8bd7bcebacacf89c74b84'  
+