Clean imports

app.py

@@ -1,19 +1,17 @@
 # based on https://github.com/hwchase17/langchain-gradio-template/blob/master/app.py
-from difflib import SequenceMatcher
+import collections
 import os
-import re
+from itertools import islice
+
 import gradio as gr
+from diff_match_patch import diff_match_patch
 from langchain.chains import LLMChain
-from langchain.chat_models import PromptLayerChatOpenAI, AzureChatOpenAI
+from langchain.chat_models import PromptLayerChatOpenAI
 from langchain.memory import ConversationBufferMemory
 from langchain.prompts import PromptTemplate
 from langchain.prompts.chat import ChatPromptTemplate, HumanMessagePromptTemplate
 from langchain.schema import HumanMessage
 
-from diff_match_patch import diff_match_patch
-import collections
-from itertools import islice
-
 GRAMMAR_PROMPT = "Proofread for grammar and spelling without adding new paragraphs:\n{content}"
 
 INTRO_PROMPT = """These are the parts of a good introductory paragraph: