Fix linting issues

lib/ansible/modules/apt_repository.py

@@ -187,8 +187,6 @@ from ansible.module_utils.common.respawn import has_respawned, probe_interpreter
 from ansible.module_utils.common.text.converters import to_native
 from ansible.module_utils.urls import fetch_file, fetch_url
 
-from ansible.module_utils.common.locale import get_best_parsable_locale
-
 try:
     import apt
     import apt_pkg
@@ -530,7 +528,6 @@ class UbuntuSourcesList(SourcesList):
         if not self.module.check_mode:
             # use first available key dir, in order of preference
 
-
             keyserver_url = "https://keyserver.ubuntu.com/pks/lookup?{}".format(
                 urlencode({"op": "get", "search": "0x" + info['signing_key_fingerprint']})
             )