title: Airflow copy bigquery table to GCS without column names
body: <p>I know we can use airflow bigquery_to_gcs operator to copy a bigquery table to GCS but that will copy the column names as well. I have a use case that should have only the column values but not the names. Is it possible?</p>
  <p>fruit  | any_value |</p>
  <p>pear   | pear      |</p>
  <p>apple  | pear      |</p>
  <p>banana | apple     |</p>
  <p>I want my csv file to be something like this</p>
  <p>pear,pear<br />
  apple,pear<br />
  apple,pear</p>
  <p>Whereas the output if I use bigquery_to_gcs is</p>
  <p>fruit,any_value<br />
  pear,pear<br />
  apple,pear<br />
  apple,pear</p>