Refactor return message handling in export_contest_file function in app.py

- Simplified the return messages for existing contest data and successful uploads by removing Streamlit's st.info and st.success calls, enhancing code clarity and maintainability.
- This change improves the readability of the feedback messages while maintaining user experience.

app.py

@@ -64,7 +64,7 @@ def export_contest_file(db, sport, type, contest_date, contest_id, contest_data)
         cursor = collection.find()
         contest_import = pd.DataFrame(list(cursor)).drop('_id', axis=1)
         if contest_id in contest_import['Contest ID'].values:
-            return_message = st.info("Data for this contest already exists, no need to upload, but we appreciate the effort!")
+            return_message = "Data for this contest already exists, no need to upload, but we appreciate the effort!"
             return return_message
     except:
         contest_import = pd.DataFrame(columns = ['Rank', 'EntryId', 'EntryName', 'TimeRemaining', 'Points', 'Lineup', 'Player', 'Roster Position', '%Drafted', 'FPTS', 'Contest Date', 'Contest ID'])
@@ -83,7 +83,7 @@ def export_contest_file(db, sport, type, contest_date, contest_id, contest_data)
                 break
             except Exception as e:
                 print(f"Retry due to error: {e}")
-    return_message = st.success("Contest data uploaded successfully! We appreciate the data!")
+    return_message = "Contest data uploaded successfully! We appreciate the data!"
 
     return return_message