refactor: Remove unused router import in UserProfile.vue

- Eliminate the `useRouter` import from UserProfile.vue as it is no longer needed for the logout functionality.

src/components/auth/UserProfile.vue

@@ -1,6 +1,5 @@
 <script setup lang="ts">
 import { computed } from 'vue'
-import { useRouter } from 'vue-router'
 import { Button } from '@/components/ui/button'
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card'
 import { Badge } from '@/components/ui/badge'
@@ -8,7 +7,6 @@ import { User, LogOut, Settings } from 'lucide-vue-next'
 import { auth } from '@/composables/useAuth'
 import { toast } from 'vue-sonner'
 
-const router = useRouter()
 const userDisplay = computed(() => auth.userDisplay.value)
 
 async function handleLogout() {