fix a few unused imports and suchlike, discovered by pyflakes

src/allmydata/scripts/debug.py

@@ -328,7 +328,6 @@ def find_shares(config, out=sys.stdout, err=sys.stderr):
     /home/warner/testnet/node-2/storage/shares/44k/44kai1tui348689nrw8fjegc8c/2
     """
     from allmydata import storage
-    from allmydata.util import idlib
 
     sharedir = storage.storage_index_to_dir(storage.si_a2b(config.si_s))
     for d in config.nodedirs:

src/allmydata/test/test_base62.py

@@ -37,9 +37,6 @@ class T(unittest.TestCase):
     def test_ende_0x0100(self):
         return self._test_ende('\x01\x00')
 
-    def test_ende_0x010000(self):
-        return self._test_ende('\x01\x00\x00')
-
     def test_ende_0x000000(self):
         return self._test_ende('\x00\x00\x00')
 
@@ -70,7 +67,7 @@ class T(unittest.TestCase):
             assert bs == bs2l
 
 def suite():
-    suite = unittest.makeSuite(base62TestCase, 'test')
+    suite = unittest.makeSuite(T, 'test')
     return suite
 
 if __name__ == "__main__":

src/allmydata/test/test_helper.py

@@ -7,7 +7,7 @@ from foolscap import Tub, eventual
 from foolscap.logging import log
 
 from allmydata import offloaded, storage, upload
-from allmydata.util import hashutil, fileutil, idlib, mathutil
+from allmydata.util import hashutil, fileutil, mathutil
 from pycryptopp.cipher.aes import AES
 
 MiB = 1024*1024

src/allmydata/util/base62.py

@@ -9,7 +9,7 @@
 # from the Python Standard Library
 import string
 
-from allmydata.util.mathutil import div_ceil, log_ceil, log_floor
+from allmydata.util.mathutil import log_ceil, log_floor
 
 chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"