remove code in comments

theano/sandbox/cuda/__init__.py

@@ -23,8 +23,6 @@ from theano.tensor.basic import register_transfer
 # we use for optimization. Otherwise, we can iterate 100s of time on
 # the graph and apply only a few optimizations each time.
 gpu_optimizer = EquilibriumDB(ignore_newtrees=False)
-#gpu_optimizer = EquilibriumDB(ignore_newtrees=True,#False,
-#                              tracks_on_change_inputs=True)#True)
 gpu_seqopt = SequenceDB()