diff --git a/wa/utils/cpustates.py b/wa/utils/cpustates.py
index c2557cd4..71f53b2f 100755
--- a/wa/utils/cpustates.py
+++ b/wa/utils/cpustates.py
@@ -15,12 +15,10 @@
 
 
 import os
-import sys
 import re
 import logging
 from ctypes import c_int32
 from collections import defaultdict
-import argparse
 
 from devlib.utils.csvutil import create_writer, csvwriter
 
diff --git a/wa/utils/diff.py b/wa/utils/diff.py
index b234c2c8..5f126358 100644
--- a/wa/utils/diff.py
+++ b/wa/utils/diff.py
@@ -17,12 +17,12 @@ import os
 import re
 import logging
 
+#pyline disable=redefined-builtin
 from builtins import zip
 from future.moves.itertools import zip_longest
 
-from wa.utils.misc import as_relative, diff_tokens, write_table
+from wa.utils.misc import diff_tokens, write_table
 from wa.utils.misc import ensure_file_directory_exists as _f
-from wa.utils.misc import ensure_directory_exists as _d
 
 logger = logging.getLogger('diff')
 
diff --git a/wa/utils/misc.py b/wa/utils/misc.py
index bc15f4e2..6a70aee5 100644
--- a/wa/utils/misc.py
+++ b/wa/utils/misc.py
@@ -19,18 +19,17 @@ Miscellaneous functions that don't fit anywhere else.
 
 """
 
-import os
-import sys
-import re
-import math
+import hashlib
 import imp
+import logging
+import math
+import os
+import random
+import re
 import string
 import subprocess
-import traceback
-import logging
-import random
-import hashlib
 import sys
+import traceback
 from datetime import datetime, timedelta
 from operator import mul
 if sys.version_info[0] == 3: