chore: remove 'Unnamed: 0' index column

pages/1_📈_Plotting.py

@@ -31,6 +31,8 @@ with st.sidebar:
     file = st.file_uploader("Load CSV file", accept_multiple_files = False)
     if file:
         df = pd.read_csv(file, index_col = False)
+        df.index = df['Unnamed: 0'].tolist()
+        del df['Unnamed: 0']
         if 'df' not in st.session_state:
                 st.session_state['df'] = df
         st.success("Your data has been successfully loaded! 🤗")