*   Remove `tf.contrib.linalg`. `tf.linalg` should be used instead.
    *   Replace any calls to `tf.contrib.get_signature_def_by_key(metagraph_def,
        signature_def_key)` with
        `meta_graph_def.signature_def[signature_def_key]`. Catching a ValueError
        exception thrown by `tf.contrib.get_signature_def_by_key` should be
        replaced by catching a KeyError exception.
*   `tf.contrib.data`