Remove obsolete source code

modules/settings/Settings.js

 let localFlipX = JSON.parse(jitsiLocalStorage.getItem("localFlipX") || true);
 let displayName = UIUtil.unescapeHtml(
     jitsiLocalStorage.getItem("displayname") || '');
-let language = jitsiLocalStorage.getItem("language");
 let cameraDeviceId = jitsiLocalStorage.getItem("cameraDeviceId") || '';
 let micDeviceId = jitsiLocalStorage.getItem("micDeviceId") || '';
 let welcomePageDisabled = JSON.parse(
         return avatarUrl;
     },
 
-    getLanguage () {
-        return language;
-    },
-    setLanguage: function (lang) {
-        language = lang;
-    },
-
     /**
      * Sets new flipX state of local video and saves it to the local storage.
      * @param {string} val flipX state of local video

react/features/app/functions.web.js

 import URLProcessor from '../../../modules/config/URLProcessor';
 import KeyboardShortcut
     from '../../../modules/keyboardshortcut/keyboardshortcut';
-import settings from '../../../modules/settings/Settings';
 import getTokenData from '../../../modules/tokendata/TokenData';
 import JitsiMeetLogStorage from '../../../modules/util/JitsiMeetLogStorage';
 
     // with jitsi meet.
     APP.API.init(APP.tokenData.jwt ? { forceEnable: true } : undefined);
 
-    APP.translation.init(settings.getLanguage());
+    APP.translation.init();
 }
 
 /**

react/features/base/connection/actions.web.js

 
             APP.UI.initConference();
 
-            APP.UI.addListener(UIEvents.LANG_CHANGED, language => {
-                APP.translation.setLanguage(language);
-                APP.settings.setLanguage(language);
-            });
+            APP.UI.addListener(
+                    UIEvents.LANG_CHANGED,
+                    language => APP.translation.setLanguage(language));
 
             APP.keyboardshortcut.init();