Only show language setting if more than 1 locale. Only leave 'en' in...

Only show language setting if more than 1 locale. Only leave 'en' in locale.clj to disable it until it's more complete

frontend/src/metabase/admin/settings/selectors.js

@@ -56,7 +56,8 @@ const SECTIONS = [
                 display_name: "Language",
                 type: "select",
                 options:  MetabaseSettings.get("available_locales").map(([value, name]) => ({ name, value })),
-                placeholder: "Select a language"
+                placeholder: "Select a language",
+                getHidden: () => MetabaseSettings.get("available_locales").length < 2
             },
             {
                 key: "anon-tracking-enabled",

resources/locales.clj

 {
-  :locales  #{"en" "de" }
+  :locales  #{"en"}
   :packages ["metabase"]
   :bundle   "metabase.Messages"
 }