Remove RandomStream import from __init__.py

theano/__init__.py

@@ -191,11 +191,3 @@ def sparse_grad(var):
     ret = var.owner.op.__class__(sparse_grad=True)(*var.owner.inputs)
     return ret
 
-# This cannot be done in tensor/__init__.py due to a circular
-# dependency -- shared_randomstreams depends on raw_random which
-# depends on tensor.  As a work-around, we import RandomStreams here
-# and inject an instance in tensor.
-from theano.tensor.shared_randomstreams import RandomStreams
-# Imitate the numpy.random symbol with a tensor.random one
-tensor.random = RandomStreams(seed=0xBAD5EED)
-del RandomStreams