fix bug in asr_inference_paraformer_vad_punc and support without punc model

lzr265946

2023-02-08 5db5950e0735783a8b1c3b5278868b75dd8556a7

 funasr/punctuation/abs_model.py

@@ -23,7 +23,5 @@
    """

    @abstractmethod
    def forward(
        self, input: torch.Tensor, hidden: torch.Tensor
    ) -> Tuple[torch.Tensor, torch.Tensor]:
    def forward(self, input: torch.Tensor, hidden: torch.Tensor) -> Tuple[torch.Tensor, torch.Tensor]:
        raise NotImplementedError