chore: remove i18n (#1828)

src/store/modules/app.js

@@ -1,5 +1,4 @@
 import Cookies from 'js-cookie'
-import { getLanguage } from '@/lang/index'
 
 const state = {
   sidebar: {
@@ -7,7 +6,6 @@ const state = {
     withoutAnimation: false
   },
   device: 'desktop',
-  language: getLanguage(),
   size: Cookies.get('size') || 'medium'
 }
 
@@ -29,10 +27,6 @@ const mutations = {
   TOGGLE_DEVICE: (state, device) => {
     state.device = device
   },
-  SET_LANGUAGE: (state, language) => {
-    state.language = language
-    Cookies.set('language', language)
-  },
   SET_SIZE: (state, size) => {
     state.size = size
     Cookies.set('size', size)
@@ -49,9 +43,6 @@ const actions = {
   toggleDevice({ commit }, device) {
     commit('TOGGLE_DEVICE', device)
   },
-  setLanguage({ commit }, language) {
-    commit('SET_LANGUAGE', language)
-  },
   setSize({ commit }, size) {
     commit('SET_SIZE', size)
   }