Revert "PLT-1800 Load server side locale from the config.json (#3076)"

This reverts commit 34beaa569b.

webapp/root.jsx

@@ -53,7 +53,6 @@ const ActionTypes = Constants.ActionTypes;
 import AdminConsole from 'components/admin_console/admin_console.jsx';
 import SystemAnalytics from 'components/analytics/system_analytics.jsx';
 import ConfigurationSettings from 'components/admin_console/configuration_settings.jsx';
-import LocalizationSettings from 'components/admin_console/localization_settings.jsx';
 import UsersAndTeamsSettings from 'components/admin_console/users_and_teams_settings.jsx';
 import PrivacySettings from 'components/admin_console/privacy_settings.jsx';
 import LogSettings from 'components/admin_console/log_settings.jsx';
@@ -143,8 +142,8 @@ function preRenderSetup(callwhendone) {
     );
 
     function afterIntl() {
+        I18n.doAddLocaleData();
         $.when(d1).done(() => {
-            I18n.doAddLocaleData();
             callwhendone();
         });
     }
@@ -363,10 +362,6 @@ function renderRootComponent() {
                                 path='configuration'
                                 component={ConfigurationSettings}
                             />
-                            <Route
-                                path='localization'
-                                component={LocalizationSettings}
-                            />
                             <Route
                                 path='users_and_teams'
                                 component={UsersAndTeamsSettings}