fix: Remove unused Loader2 import and toast variable from TeleportConfigView

Fixes Docker build failure — vue-tsc -b treats unused declarations as errors.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/views/admin/TeleportConfigView.vue

@@ -1,7 +1,6 @@
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
 import { useTeleportStore } from '@/stores/teleport'
-import { useToastStore } from '@/stores/toast'
 import PermissionGroupEditor from '@/components/teleport/PermissionGroupEditor.vue'
 import {
   Save,
@@ -13,11 +12,9 @@ import {
   Home,
   Users,
   Settings as SettingsIcon,
-  Loader2,
 } from 'lucide-vue-next'
 
 const store = useTeleportStore()
-const toast = useToastStore()
 
 const activeTab = ref<'general' | 'homes' | 'tpr' | 'vip'>('general')
 const showCreateModal = ref(false)