Remove redundant close button

- Removed the duplicate close button at the top of the document
- Kept the more intuitive close button next to the success message
- Streamlined user interface for document dismissal

app.py

@@ -1283,13 +1283,7 @@ with main_tab1:
             # No extra spacing needed as it will be managed programmatically
             metadata_placeholder = st.empty()
             
-            # If there's a document already processed and active, show a button to close it
-            if st.session_state.processed_document_active:
-                if st.button("✕ Close Current Document", key="close_document_button_top", help="Clear current document and start over"):
-                    # Clear the processed document flag
-                    st.session_state.processed_document_active = False
-                    # Rerun to reset the page
-                    st.rerun()
+            # We now have a close button next to the success message, so we don't need one here
         
         # auto_process_sample is already initialized at the top of the function