Remove NLTK dependency and related downloads; clean up requirements

app.py

@@ -1,6 +1,5 @@
 import gradio as gr
 from main import main
-import nltk
 
 def rexplore_summarizer(corpus):
     response = main(corpus)
@@ -52,6 +51,4 @@ with gr.Blocks(theme=theme, title="ReXplore Summarizer", fill_height=True) as ap
     )
     clear_btn.click(clear_everything, inputs=[text_corpus, raw_data, summary, mindmap], outputs=[text_corpus, raw_data, summary, mindmap], show_api=False)
 
-nltk.download('punkt')
-nltk.download('punkt_tab')
 app.queue(default_concurrency_limit=1).launch(show_api=True)

requirements.txt

@@ -1,5 +1,3 @@
 openai==1.57.3
 gradio==5.8.0
 python-dotenv==1.0.1
-sumy==0.11.0
-nltk==3.9.1