remove from_pretrained (#754)

aky15

2023-07-20 97c617854ee802e0bf83fe903c38f1eb52c892bc

 funasr/export/export_model.py

@@ -192,6 +192,7 @@
                config, model_file, cmvn_file, 'cpu'
            )
            self.frontend = model.frontend
            self.export_config["feats_dim"] = 560
        elif mode.startswith('offline'):
            from funasr.tasks.vad import VADTask
            config = os.path.join(model_dir, 'vad.yaml')