Update translation files

Updated by "Cleanup translation files" hook in Weblate.

Translation: Element Call/element-call
Translate-URL: https://translate.element.io/projects/element-call/element-call/

public/locales/zh-Hans/app.json

@@ -90,7 +90,6 @@
   "Logging in…": "登录中……",
   "Local volume": "本地音量",
   "Loading…": "加载中……",
-  "Loading room…": "加载房间中……",
   "Leave": "离开",
   "Join existing call?": "加入现有的通话？",
   "Join call now": "现在加入通话",