Remove unused Python imports

contrib/linearize/linearize-data.py

@@ -8,16 +8,10 @@
 #
 
 from __future__ import print_function, division
-try: # Python 3
-    import http.client as httplib
-except ImportError: # Python 2
-    import httplib
-import json
 import struct
 import re
 import os
 import os.path
-import base64
 import sys
 import hashlib
 import datetime

contrib/linearize/linearize-hashes.py

@@ -13,7 +13,6 @@ try: # Python 3
 except ImportError: # Python 2
     import httplib
 import json
-import struct
 import re
 import base64
 import sys