remove import not used detected by flymake

theano/sandbox/linalg/tests/test_linalg.py

@@ -503,7 +503,6 @@ class test_Eig(utt.InferShapeTester):
                                 warn=False)
 
     def test_eval(self):
-        import math
         A = theano.tensor.matrix(dtype=self.dtype)
         self.assertEquals([e.eval({A: [[1]]}) for e in self.op(A)],
                           [[1.0], [[1.0]]])

theano/tensor/nnet/tests/test_conv.py

-import sys
 import time
-import unittest
 import numpy
 
 import theano
 import theano.tensor as T
-from theano import function, Mode
 from theano.tests import unittest_tools as utt
 
 from theano.tensor.nnet import conv

theano/tensor/signal/tests/test_downsample.py

 import unittest
-import sys
-import time
 import numpy
 import theano.tensor as tensor
 from theano.tests import unittest_tools as utt
 from theano.tensor.signal.downsample import (DownsampleFactorMax, max_pool_2d,
                                              DownsampleFactorMaxGrad)
-from theano import function, Mode
+from theano import function
 
 
 class TestDownsampleFactorMax(utt.InferShapeTester):

theano/tensor/tests/test_elemwise.py

 import cPickle
 from copy import copy
 from itertools import imap
-import time
 import unittest
 
 import numpy
 from nose.plugins.skip import SkipTest
-from numpy.testing import dec
 
 import theano
 from theano.gof.python25 import all, any
-from theano.gof import Variable, Op
 from theano import gof, scalar, config
 
 from theano import tensor