remove political sensitive sentences from zh-cn
remove political sensitive sentences from zh-cn

based on #2087

gozer/voice-web,gozer/voice-web,gozer/voice-web,gozer/voice-web,common-voice/common-voice,common-voice/common-voice,gozer/voice-web,common-voice/common-voice,gozer/voice-web,common-voice/common-voice,gozer/voice-web