There is no OC locale in Vue Element Admin

src/lang/index.js

@@ -4,7 +4,6 @@ import Cookies from 'js-cookie'
 import elementEnLocale from 'element-ui/lib/locale/lang/en' // element-ui lang
 import elementZhLocale from 'element-ui/lib/locale/lang/zh-CN' // element-ui lang
 import elementEsLocale from 'element-ui/lib/locale/lang/es' // element-ui lang
-import elementOcLocale from 'element-ui/lib/locale/lang/oc' // element-ui lang
 import enLocale from './en'
 import zhLocale from './zh'
 import esLocale from './es'
@@ -26,8 +25,7 @@ const messages = {
     ...elementEsLocale
   },
   oc: {
-    ...ocLocale,
-    ...elementOcLocale
+    ...ocLocale
   }
 }