remove never use code (#1151)

夜雨飘零

2023-12-06 6f88a689af05dee063d52fc65806cb0addbb764b

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beam_size: 5
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.5
lm_weight: 0.7