Refactor app.py to streamline the initialization process by moving the page configuration to the top and removing unnecessary global variable deletions, enhancing code clarity and organization.

app.py

@@ -1,16 +1,10 @@
 import streamlit as st
-st.set_page_config(layout="wide")
-
-for name in dir():
-    if not name.startswith('_'):
-        del globals()[name]
-
 import numpy as np
 import pandas as pd
-import streamlit as st
-import gspread
 import pymongo
 
+st.set_page_config(layout="wide")
+
 @st.cache_resource
 def init_conn():
         uri = st.secrets['mongo_uri']