fix c# demo project to new onnx model files (#1689)

Dogvane Huang

2024-07-02 dfcc5d47587d3e793cbfec2e9509c0e9a9e1732c

 examples/industrial_data_pretraining/llm_asr/demo_speech2text.sh

@@ -62,4 +62,3 @@

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done
wait