src/Currency/Drivers/Database.php
public function delete($code)
    {
        $table = $this->config('table');

        return $this->database->table($table)
                              ->where('currency_code', strtoupper($code))
                              ->delete();
    }
public function delete($code)
    {
        $table = $this->config('table');

        return $this->database->table($table)
                              ->where('currency_code', strtoupper($code))
                              ->delete();
    }
{@inheritdoc}