Run autoflake to remove unused imports & variables

wa/utils/misc.py

@@ -25,19 +25,15 @@ import re
 import math
 import imp
 import string
-import threading
-import signal
 import subprocess
-import pkgutil
 import traceback
 import logging
 import random
 import hashlib
 from datetime import datetime, timedelta
-from operator import mul, itemgetter
+from operator import mul
 from StringIO import StringIO
-from itertools import cycle, groupby, chain
-from functools import partial
+from itertools import chain, cycle
 from distutils.spawn import find_executable
 
 import yaml

wa/utils/types.py

@@ -27,10 +27,8 @@ fact that Python is not the best language to use for configuration.
 """
 import os
 import re
-import math
 import numbers
 import shlex
-import string
 from bisect import insort
 from urllib import quote, unquote
 from collections import defaultdict, MutableMapping
@@ -38,7 +36,7 @@ from copy import copy
 
 from devlib.utils.types import identifier, boolean, integer, numeric, caseless_string
 
-from wa.utils.misc import isiterable, to_identifier
+from wa.utils.misc import isiterable
 
 
 def list_of_strs(value):