Remove unused import

Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

Author: pombredanne

src/packagedcode/licensing.py

@@ -10,8 +10,6 @@
 import logging
 import os
 
-from license_expression import Licensing
-
 from licensedcode.cache import build_spdx_license_expression
 from licensedcode.cache import get_cache
 from licensedcode.detection import LicenseDetection