remove unecessary gates for users routes and add UserPolicy

app/Http/Controllers/SearchController.php

@@ -147,7 +147,6 @@ class SearchController extends Controller
     public function searchUsers(Request $request)
     {
         try {
-            $this->authorize('searchUsers');
             try {
                 $this->client->collections['users']->delete();
             } catch (\Exception $e) {