Remove unused translations in web UI (#12143)

app/javascript/mastodon/locales/zh-CN.json

@@ -178,7 +178,6 @@
   "home.column_settings.basic": "基本设置",
   "home.column_settings.show_reblogs": "显示转嘟",
   "home.column_settings.show_replies": "显示回复",
-  "home.column_settings.update_live": "Update in real-time",
   "intervals.full.days": "{number} 天",
   "intervals.full.hours": "{number} 小时",
   "intervals.full.minutes": "{number} 分钟",
@@ -272,7 +271,6 @@
   "navigation_bar.preferences": "首选项",
   "navigation_bar.public_timeline": "跨站公共时间轴",
   "navigation_bar.security": "安全",
-  "notification.and_n_others": "and {count, plural, one {# other} other {# others}}",
   "notification.favourite": "{name} 收藏了你的嘟文",
   "notification.follow": "{name} 开始关注你",
   "notification.mention": "{name} 提及了你",