Remove out param from var.py:compress

theano/tensor/var.py

@@ -596,10 +596,10 @@ class _tensor_py_operators:
         """
         return theano.tensor.extra_ops.squeeze(self)
 
-    def compress(self, a, axis=None, out=None):
+    def compress(self, a, axis=None):
         """Return selected slices only
         """
-        return theano.tensor.extra_ops.compress(self, a, axis=axis, out=None)
+        return theano.tensor.extra_ops.compress(self, a, axis=axis)
 
 
 class TensorVariable(_tensor_py_operators, Variable):