fix: remove unused imports and dead code to clear ESLint errors

packages/admin/src/routes/_authenticated/files/index.tsx

@@ -10,18 +10,17 @@ import { FolderTree } from '@/components/storage/folder-tree'
 import { FileIcon, formatFileSize } from '@/components/storage/file-icons'
 import { Button } from '@/components/ui/button'
 import { Input } from '@/components/ui/input'
-import { Badge } from '@/components/ui/badge'
 import { Skeleton } from '@/components/ui/skeleton'
 import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogTrigger } from '@/components/ui/dialog'
 import { Label } from '@/components/ui/label'
 import {
   DropdownMenu, DropdownMenuContent, DropdownMenuItem, DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu'
-import { FolderPlus, Upload, Search, Folder, ChevronRight, MoreVertical, Trash2, Download, Shield } from 'lucide-react'
+import { FolderPlus, Upload, Folder, ChevronRight, MoreVertical, Trash2, Download, Shield } from 'lucide-react'
 import { toast } from 'sonner'
 import { useAuthStore } from '@/stores/auth.store'
 import { FolderPermissionsDialog } from '@/components/storage/folder-permissions-dialog'
-import type { StorageFolder, StorageFile } from '@/types/storage'
+import type { StorageFile } from '@/types/storage'
 
 export const Route = createFileRoute('/_authenticated/files/')({
   validateSearch: (search: Record<string, unknown>) => ({
@@ -69,16 +68,6 @@ function FileManagerPage() {
     onError: (err) => toast.error(err.message),
   })
 
-  const deleteFolderMutation = useMutation({
-    mutationFn: storageFolderMutations.delete,
-    onSuccess: () => {
-      queryClient.invalidateQueries({ queryKey: storageFolderKeys.all })
-      setSelectedFolderId(null)
-      toast.success('Folder deleted')
-    },
-    onError: (err) => toast.error(err.message),
-  })
-
   const deleteFileMutation = useMutation({
     mutationFn: storageFileMutations.delete,
     onSuccess: () => {