vad bugfix (#624)

lingyunfly

2023-06-13 3da40ad9fe5d1c9003014fdce75fffca23fd6900

 funasr/layers/abs_normalize.py

@@ -11,4 +11,4 @@
        self, input: torch.Tensor, input_lengths: torch.Tensor = None
    ) -> Tuple[torch.Tensor, torch.Tensor]:
        # return output, output_lengths
        raise NotImplementedError
        raise NotImplementedError