[fix] better solution for handling empty result (#1796)

Xingchen Song(宋星辰)

2024-06-11 0bd1a4d6a9893e45438505514a063d9deee91f21

 funasr/tokenizer/word_tokenizer.py

@@ -19,8 +19,7 @@

        if not remove_non_linguistic_symbols and non_linguistic_symbols is not None:
            warnings.warn(
                "non_linguistic_symbols is only used "
                "when remove_non_linguistic_symbols = True"
                "non_linguistic_symbols is only used " "when remove_non_linguistic_symbols = True"
            )

        if non_linguistic_symbols is None: