remove timezone from column pandas

import pandas as pd
from datetime import datetime, timezone
 
# CREATE THE PANDAS DATAFRAME
# WITH TIMESTAMP COLUMN
df = pd.DataFrame({
    "orderNo": [
        "4278954",
        "3473895",
        "8763762",
        "4738289",
        "1294394"
    ],
    "timestamp": [
        datetime.strptime("2021-06-01",
                          "%Y-%m-%d").replace(tzinfo=timezone.utc),
        datetime.strptime("2021-06-02",
                          "%Y-%m-%d").replace(tzinfo=timezone.utc),
        datetime.strptime("2021-06-03",
                          "%Y-%m-%d").replace(tzinfo=timezone.utc),
        datetime.strptime("2021-06-04",
                          "%Y-%m-%d").replace(tzinfo=timezone.utc),
        datetime.strptime("2021-06-05",
                          "%Y-%m-%d").replace(tzinfo=timezone.utc)
    ]
})
 
# PRINT THE DATATYPES OF
# EACH COLUMN OF DATAFRAME
print(df.dtypes)
 
# VIEW THE DATAFRAME
print(df)