How to extract each sheet within an Excel file into an individual csv file as it is without appending any column or row?

I’m trying to extract each sheet in an Excel file into multiple CSVs.
For example Sheet1, Sheet2 and Sheet3 from Sample_1.xlsx into Sheet1.csv, Sheet2.csv and Sheet3.csv
The code I run is as below :

import pandas as pd

dfs = pd.read_excel('Sample_1.xlsx', sheet_name=None)

for sheet_name, data in dfs.items():
    data.to_csv(f"{sheet_name}.csv")

It outputs all of the three CSVs as desired but each csv has an extra column (column A) with index starting 0,1,2..n . Why is that happening? and How do I get rid of it?