Revert "Docs for laravel/telescope#1409 (#9136)" (#9137)

This reverts commit 1c26889.

Author: taylorotwell

telescope.md

@@ -119,10 +119,6 @@ By default, all entries older than 24 hours will be pruned. You may use the `hou
 
     $schedule->command('telescope:prune --hours=48')->daily();
 
-The `--quiet` option may be used to suppress output during pruning:
-
-    $schedule->command('telescope:prune --hours=48 --quiet')->daily();
-
 <a name="dashboard-authorization"></a>
 ### Dashboard Authorization