[scripts] Make prepare_lang.sh clean up beforehand (prevents certain failures)#2906

Merged

danpovey merged 1 commit intokaldi-asr:masterfrom

danpovey:prepare_lang_fix

Dec 11, 2018

Commits on Dec 11, 2018

[scripts] Make prepare_lang.sh cleanup beforehand (prevents certain failures)
danpovey
committed