iputil/testutil: fix pyflakes errors/warnings

src/allmydata/test/test_iputil.py

@@ -1,9 +1,8 @@
-#!/usr/bin/env python
 
-from allmydata.util import iputil, testutil
+from allmydata.util import iputil
 
 from twisted.trial import unittest
-import re, sys
+import re
 
 DOTTED_QUAD_RE=re.compile("^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$")
 

src/allmydata/util/iputil.py

@@ -8,7 +8,6 @@ import re, socket, sys
 
 # from Twisted
 from twisted.internet import defer
-from twisted.python import log
 from twisted.internet import reactor
 from twisted.internet.protocol import DatagramProtocol
 from twisted.internet.utils import getProcessOutput

src/allmydata/util/testutil.py

@@ -39,6 +39,7 @@ class TestMixin(SignalMixin):
 
     def tearDown(self):
         if self.repeatable:
+            import repeatable_random
             repeatable_random.restore_non_repeatability()
         self.clean_pending(required_to_quiesce=True)