remove img upload button

app.py

@@ -173,7 +173,7 @@ title = """
 <h1 align="center">Global-Local QFormer for Long Video Understanding with LLMs</h1>
 
 <h5 align="center">  Introduction: We introduce a Global-Local QFormer video model that is connected with a Large Language Model to understand
-                    and answer questions about long videos. </h5> 
+                    and answer questions about long videos. To try out this demo, please upload a video and start the chat. </h5> 
 
 <div style='display:flex; gap: 0.25rem; '>
 <a href='https://huggingface.co/spaces/rxtan/Global-Local-QFormer-Video-LLM'><img src='https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-Spaces-blue'></a> 
@@ -181,7 +181,7 @@ title = """
 </div>
 
 
-Thank you for using the Global-Local QFormer Demo Page! If you have any questions or feedback, feel free to contact us. 
+Thank you for using the Global-Local QFormer Demo Page! If you have any questions or feedback, please feel free to contact us. 
 Current online demo uses the 7B version of Llama-2 due to resource limitations.