fix(config) drop ancient backwards compatibility options

react/features/base/config/reducer.js

@@ -2,7 +2,7 @@
 
 import _ from 'lodash';
 
-import { equals, ReducerRegistry, set } from '../redux';
+import { equals, ReducerRegistry } from '../redux';
 
 import {
     UPDATE_CONFIG,
@@ -187,42 +187,7 @@ function _setConfig(state, { config }) {
  * supported by jitsi-meet.
  */
 function _translateLegacyConfig(oldValue: Object) {
-    let newValue = oldValue;
-
-    const oldConfigToNewConfig = {
-        analytics: [
-            [ 'analyticsScriptUrls', 'scriptURLs' ],
-            [ 'googleAnalyticsTrackingId', 'googleAnalyticsTrackingId' ]
-        ]
-    };
-
-    // Translate the old config properties into the new config properties.
-    Object.keys(oldConfigToNewConfig).forEach(section => {
-        if (typeof oldValue[section] !== 'object') {
-            newValue = set(newValue, section, {});
-        }
-
-        for (const [ oldKey, newKey ] of oldConfigToNewConfig[section]) {
-            if (oldKey in newValue && !(newKey in newValue[section])) {
-                const v = newValue[oldKey];
-
-                // Do not modify oldValue.
-                if (newValue === oldValue) {
-                    newValue = {
-                        ...newValue
-                    };
-                }
-                delete newValue[oldKey];
-
-                // Do not modify the section because it may be from oldValue
-                // i.e. do not modify oldValue.
-                newValue[section] = {
-                    ...newValue[section],
-                    [newKey]: v
-                };
-            }
-        }
-    });
+    const newValue = oldValue;
 
     if (!Array.isArray(oldValue.toolbarButtons)
             && typeof interfaceConfig === 'object' && Array.isArray(interfaceConfig.TOOLBAR_BUTTONS)) {