Disable 2x features that are broken on TensorFlow 2.1.3 on Traverse

[felker]

• TF Profiler (not released until 2.2.0)
• SavedModel export:

  tensorflow.python.framework.errors_impl.InaccessibleTensorError: The tensor 'Tensor("dropout/mul_1:0", shape=(128, 9), dtype=float32)' cannot be accessed here: it is defined in another function or code block. Use return values, explicit Python locals or TensorFlow collections to access it. Defined in: FuncGraph(name=lstm_cell_layer_call_and_return_conditional_losses, id=35187592283920); accessed from: FuncGraph(name=lstm_layer_call_and_return_conditional_losses, id=35187592523664).