fix imports

Author: dieser-niko

spotipy/util.py

@@ -2,15 +2,11 @@
 
 """ Shows a user's playlists. This needs to be authenticated via OAuth. """
 
-__all__ = ["CLIENT_CREDS_ENV_VARS"]
+__all__ = ["CLIENT_CREDS_ENV_VARS", "get_host_port", "normalize_scope", "Retry"]
 
 import logging
-import os
-import warnings
 from types import TracebackType
 
-import spotipy
-
 import urllib3
 
 LOGGER = logging.getLogger(__name__)