removed refrences to cuda from scan_utils

theano/scan_module/scan_utils.py

@@ -22,7 +22,6 @@ from theano import gof
 from theano import tensor, scalar
 from theano.tensor.basic import get_constant_value
 
-from theano.sandbox import cuda
 
 import theano
 
@@ -93,14 +92,11 @@ def traverse(out, x,x_copy, d):
     fine for the main computational graph but confuses things a bit for the
     inner graph of scan '''
     if out == x:
-        d[out] = cuda.gpu_from_host(x_copy)
+        d[out] = tensor.as_tensor_variable(x_copy)
         return d
     elif out.owner is None:
         return d
-    elif (out.owner.op == cuda.host_from_gpu
-          and out.owner.inputs == [x] ):
-        d[out] = x_copy
-        return d
+
     else:
         for inp in out.owner.inputs:
             d = traverse(inp, x, x_copy, d)