fix(mobile): remove unused logout handler from MobileLayout

frontend/src/mobile/MobileLayout.vue

@@ -7,7 +7,6 @@ import { useUserStore } from '@/stores/user'
 import { useGroupStore } from '@/stores/group'
 import { useTeamStore } from '@/stores/team'
 import { useNotificationStore } from '@/stores/notification'
-import { resetDeviceMode } from '@/mobile/useDevice'
 
 const router = useRouter()
 const route = useRoute()
@@ -100,13 +99,6 @@ const unreadCount = computed(() => notificationStore.unreadCount)
 function goNotifications() {
   router.push('/mobile-notifications')
 }
-
-// 退出登录
-function handleLogout() {
-  resetDeviceMode()
-  userStore.logout()
-  router.push({ name: 'Login' })
-}
 </script>
 
 <template>