public function remove_header($key)
    {
        if (isset($this->request_headers[$key])) {
            unset($this->request_headers[$key]);
        }
        return $this;
    }
public function remove_header($key)
    {
        if (isset($this->request_headers[$key])) {
            unset($this->request_headers[$key]);
        }
        return $this;
    }
public function remove_header ( $ key ) { if ( isset ( $ this -> request_headers [ $ key ] ) ) { unset ( $ this -> request_headers [ $ key ] ) ; } return $ this ; }
Remove an HTTP header from the cURL request.

@param string $key (Required) The custom HTTP header to set.
@return $this A reference to the current instance.
Remove an HTTP header from the cURL request .