refactor: remove unused category column from users dashboard and streamline staff data fetching

app/routes/_admin.lg-admin.tsx

@@ -1,11 +1,9 @@
 import { isRouteErrorResponse, Outlet, redirect } from 'react-router'
-import { XiorError } from 'xior'
 
 import { getStaff } from '~/apis/admin/get-staff'
 import { AUTH_PAGES } from '~/configs/pages'
 import { AdminDefaultLayout } from '~/layouts/admin/default'
 import { handleCookie } from '~/libs/cookies'
-import { setStaffLogoutHeaders } from '~/libs/logout-header.server'
 
 import type { Route } from './+types/_admin.lg-admin'
 
@@ -16,14 +14,8 @@ export const loader = async ({ request }: Route.LoaderArgs) => {
   let staffData
 
   if (accessToken) {
-    try {
-      const { data } = await getStaff({ accessToken })
-      staffData = data
-    } catch (error) {
-      if (error instanceof XiorError && error.response?.status === 401) {
-        setStaffLogoutHeaders()
-      }
-    }
+    const { data } = await getStaff({ accessToken })
+    staffData = data
   }
 
   if (!isAuthPage && !accessToken) {