Comment out register for missing optimization.

theano/ifelse.py

@@ -652,10 +652,10 @@ def cond_merge_random_op(main_node):
 
 pushout_equilibrium = gof.EquilibriumDB()
 
-pushout_equilibrium.register("cond_lift_single_if",
-                             opt.in2out(cond_lift_single_if,
-                                        ignore_newtrees=True),
-                             'fast_run', 'ifelse')
+#pushout_equilibrium.register("cond_lift_single_if",
+#                             opt.in2out(cond_lift_single_if,
+#                                        ignore_newtrees=True),
+#                             'fast_run', 'ifelse')
 
 pushout_equilibrium.register("cond_merge_random_op",
                              opt.in2out(cond_merge_random_op,