'Deletes a key from the bucket.
:type key_name: string
:param key_name: The key name to delete
:type version_id: string
:param version_id: Unused in this subclass.
:type mfa_token: tuple or list of strings
:param mfa_token: Unused in this subclass.'

def delete_key(self, key_name, headers=None, version_id=None, mfa_token=None):

    os.remove(key_name)
