Fix TransformersModel.from_model() method (#691)
* lift protobuf restriction
* fix typos
* remove incorrect comment
* initial attempt to fix the from_model() method
* ensure input tensors are moved to proper device
* remove conditional, since device should never be None here
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Co-authored-by: Nathan Habib <30601243+NathanHB@users.noreply.github.com>
